chore(deps): bump golang from 1.21.1 to 1.21.4 #2198

Job	Run time
integration (kong:1.4.3)	1m 16s
integration (kong:1.5.1)	1m 24s
integration (kong:2.0.5)	1m 17s
integration (kong:2.1.4)	1m 21s
integration (kong:2.2.2)	1m 16s
integration (kong:2.3.3)	1m 15s
integration (kong:2.4.1)	1m 16s
integration (kong:2.5.1)	1m 56s
integration (kong:2.6.0)	1m 19s
integration (kong:2.7)	2m 6s
integration (kong:2.8)	1m 17s
integration (kong:3.0)	1m 29s
integration (kong:3.1)	1m 26s
integration (kong:3.2)	1m 25s
integration (kong:3.3)	1m 53s
integration (kong/kong:master-alpine)	1m 55s
	23m 51s

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