Update splunk-otel-javaagent to latest (#6131) #12864

Job	Run time
setup-environment	1m 24s
tidy	2m 25s
lint	3m 30s
coverage	3m 28s
cross-compile (binaries-darwin_amd64)	3m 29s
generate-metrics	3m 27s
cross-compile (binaries-darwin_arm64)	3m 30s
gofmt	3m 29s
cross-compile (binaries-linux_amd64)	3m 29s
test	3m 30s
cross-compile (binaries-linux_arm64)	3m 28s
cross-compile (binaries-windows_amd64)	3m 28s
cross-compile (binaries-linux_ppc64le)	3m 28s
	42m 5s

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