build: switch GH actions builds to use Go 1.21 final release

[deadprogram]

This PR switches the GH actions builds to use Go 1.21 final release.

Fixes #3830

[github-actions]

Size difference with the dev branch:

Binary size difference

 before   after   diff
  60748   60748      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adt7410/main.go
   9768    9768      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adxl345/main.go
  13372   13372      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/amg88xx
   8896    8896      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/main.go
  11780   11780      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/apds9960/proximity/main.go
  10636   10636      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/itsybitsy-m0/main.go
   8140    8140      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/at24cx/main.go
   8484    8484      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bh1750/main.go
   7708    7708      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/blinkm/main.go
  63192   63192      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmi160/main.go
  28064   28064      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmp180/main.go
  63260   63260      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmp280/main.go
  12432   12432      0   0.00%  tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/bmp388/main.go
   7724    7724      0   0.00%  tinygo build -size short -o ./build/test.hex -target=bluepill ./examples/ds1307/sram/main.go
  22052   22052      0   0.00%  tinygo build -size short -o ./build/test.hex -target=bluepill ./examples/ds1307/time/main.go
  68888   68888      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/ds3231/main.go
   4712    4712      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/easystepper/main.go
  24960   24960      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/espat/espconsole/main.go
  25160   25160      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/espat/esphub/main.go
  24968   24968      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/espat/espstation/main.go
  68640   68640      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/flash/console/spi
  64664   64664      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/flash/console/qspi
   7072    7072      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/gc9a01/main.go
  68032   68032      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/i2c/main.go
  68444   68444      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/uart/main.go
   8576    8576      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/hcsr04/main.go
   5688    5688      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hd44780/customchar/main.go
   5652    5652      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hd44780/text/main.go
  10716   10716      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/hd44780i2c/main.go
  14792   14792      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/hts221/main.go
  15896   15896      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hub75/main.go
  10220   10220      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/basic
  11024   11024      0   0.00%  tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/basic
  29212   29212      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/pyportal_boing
  10248   10248      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/scroll
  11100   11100      0   0.00%  tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/scroll
 267468  267468      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/slideshow
  12124   12124      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis3dh/main.go
  14148   14148      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/lps22hb/main.go
  26156   26156      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/lsm303agr/main.go
  12620   12620      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/lsm6ds3/main.go
  11084   11084      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mag3110/main.go
  10272   10272      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp23017/main.go
  10704   10704      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp23017-multiple/main.go
   9996    9996      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp3008/main.go
  66816   66816      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp2515/main.go
  21968   21968      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/microbitmatrix/main.go
  22024   22024      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit-v2 ./examples/microbitmatrix/main.go
   8636    8636      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mma8653/main.go
   8420    8420      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mpu6050/main.go
  74928   74928      0   0.00%  tinygo build -size short -o ./build/test.hex -target=p1am-100 ./examples/p1am/main.go
  12264   12264      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pico ./examples/pca9685/main.go
   6112    6112      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setbuffer/main.go
   5124    5124      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setpixel/main.go
   2889    2889      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino ./examples/servo
   8092    8092      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/shifter/main.go
  56340   56340      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht3x/main.go
  56312   56312      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/shtc3/main.go
   6452    6452      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1306/i2c_128x32/main.go
   5960    5960      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1306/spi_128x64/main.go
   5728    5728      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1331/main.go
   6420    6420      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/st7735/main.go
   6316    6316      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/st7789/main.go
  17368   17368      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/thermistor/main.go
  10284   10284      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-bluefruit ./examples/tone
  10952   10952      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/tm1637/main.go
   9536    9536      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/touch/resistive/fourwire/main.go
  12532   12532      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/touch/resistive/pyportal_touchpaint/main.go
  15852   15852      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl53l1x/main.go
  13876   13876      0   0.00%  tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl6180x/main.go
   6484    6484      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13/main.go
   6036    6036      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13x/main.go
   6312    6312      0   0.00%  tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd4in2/main.go
 137260  137260      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/ntpclient/main.go
 137268  137268      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/udpstation/main.go
 137528  137528      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/tcpclient/main.go
 137660  137660      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/webclient/main.go
   7120    7120      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/ws2812
   5452    5452      0   0.00%  tinygo build -size short -o ./build/test.bin -target=m5stamp-c3          ./examples/ws2812
  61588   61588      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-nrf52840 ./examples/is31fl3731/main.go
   1565    1565      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino   ./examples/ws2812
    896     896      0   0.00%  tinygo build -size short -o ./build/test.hex -target=digispark ./examples/ws2812
  32332   32332      0   0.00%  tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/bme280/main.go
  16816   16816      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/microphone/main.go
  11484   11484      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/buzzer/main.go
  13076   13076      0   0.00%  tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/veml6070/main.go
   7012    7012      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l293x/simple/main.go
   8968    8968      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l293x/speed/main.go
   6980    6980      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l9110x/simple/main.go
   9524    9524      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l9110x/speed/main.go
   7464    7464      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nucleo-f103rb ./examples/shiftregister/main.go
   8336    8336      0   0.00%  tinygo build -size short -o ./build/test.hex -target=hifive1b ./examples/ssd1351/main.go
  13364   13364      0   0.00%  tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis2mdl/main.go
   8516    8516      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/max72xx/main.go
  77260   77260      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/dht/main.go
  70732   70732      0   0.00%  tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/alarm/
   7492    7492      0   0.00%  tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/clkout/
  70404   70404      0   0.00%  tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/time/
  70668   70668      0   0.00%  tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/timer/
  12108   12108      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pico ./examples/qmi8658c/main.go
   9024    9024      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/ina260/main.go
   9432    9432      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nucleo-l432kc ./examples/aht20/main.go
  72028   72028      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/sdcard/console/
  82464   82464      0   0.00%  tinygo build -size short -o ./build/test.hex -target=wioterminal ./examples/rtl8720dn/webclient/
  71808   71808      0   0.00%  tinygo build -size short -o ./build/test.hex -target=wioterminal ./examples/rtl8720dn/webserver/
  98584   98584      0   0.00%  tinygo build -size short -o ./build/test.hex -target=wioterminal ./examples/rtl8720dn/mqttsub/
  60304   60304      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/i2csoft/adt7410/
  10400   10400      0   0.00%  tinygo build -size short -o ./build/test.elf -target=wioterminal ./examples/axp192/m5stack-core2-blinky/
   9076    9076      0   0.00%  tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/xpt2046/main.go
  14572   14572      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nucleo-wl55jc ./examples/sx126x/lora_rxtx/
  25884   25884      0   0.00%  tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/ssd1289/main.go
  11348   11348      0   0.00%  tinygo build -size short -o ./build/test.hex -target=pico ./examples/irremote/main.go
  11340   11340      0   0.00%  tinygo build -size short -o ./build/test.hex -target=badger2040 ./examples/uc8151/main.go
  10468   10468      0   0.00%  tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/scd4x/main.go
   8968    8968      0   0.00%  tinygo build -size short -o ./build/test.uf2 -target=circuitplay-express ./examples/makeybutton/main.go
   9732    9732      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/ds18b20/main.go
  81336   81336      0   0.00%  tinygo build -size short -o ./build/test.hex -target=nucleo-wl55jc ./examples/lora/lorawan/atcmd/
  15740   15740      0   0.00%  tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/as560x/main.go
   9952    9952      0   0.00%  tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mpu6886/main.go
   8124    8124      0   0.00%  tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/ttp229/main.go
3468982 3468982      0   0.00%   sum