Bump golang in /examples/prometheus-federation/prom-counter (#6293) #13450

Job	Run time
setup-environment	1m 32s
tidy	2m 7s
gofmt	7m 29s
lint	12m 9s
test	17m 32s
coverage	12m 15s
generate-metrics	5m 53s
cross-compile (binaries-darwin_amd64)	5m 22s
cross-compile (binaries-linux_amd64)	5m 34s
cross-compile (binaries-linux_ppc64le)	5m 16s
cross-compile (binaries-linux_arm64)	6m 38s
cross-compile (binaries-darwin_arm64)	5m 24s
cross-compile (binaries-windows_amd64)	5m 31s
	1h 32m 42s

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