Build Chef CI examples on all platforms

Bump third_party/pigweed/repo from `1f12d06` to `b8d1cd0` #1935

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Chef - ESP32 CI Examples	12m 1s
Chef - Linux CI Examples	5m 33s
Chef - NRFConnect CI Examples	12m 21s
Chef - Telink CI Examples	12m 16s
	42m 11s