chore(deps): bump golang from 1.21.1 to 1.21.4 #2229

Job	Run time
integration (kong:1.4.3)	1m 14s
integration (kong:1.5.1)	1m 53s
integration (kong:2.0.5)	1m 20s
integration (kong:2.1.4)	1m 19s
integration (kong:2.2.2)	1m 59s
integration (kong:2.3.3)	1m 24s
integration (kong:2.4.1)	1m 21s
integration (kong:2.5.1)	1m 20s
integration (kong:2.6.0)	1m 18s
integration (kong:2.7)	1m 47s
integration (kong:2.8)	2m 6s
integration (kong:3.0)	1m 23s
integration (kong:3.1)	1m 50s
integration (kong:3.2)	1m 26s
integration (kong:3.3)	2m 0s
integration (kong/kong:master-alpine)	1m 56s
	25m 36s

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