Bump golang in /examples/splunk-hec-traces/tracing (#6103) #12734

Job	Run time
setup-environment	1m 24s
generate-metrics	5m 35s
gofmt	5m 33s
test	16m 19s
lint	11m 18s
tidy	2m 17s
coverage	11m 22s
cross-compile (binaries-darwin_amd64)	5m 4s
cross-compile (binaries-darwin_arm64)	5m 3s
cross-compile (binaries-linux_amd64)	5m 17s
cross-compile (binaries-linux_arm64)	4m 54s
cross-compile (binaries-windows_amd64)	5m 5s
cross-compile (binaries-linux_ppc64le)	5m 12s
	1h 24m 23s

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