Update GitHub Actions workflows. (#339) #124

Job	Run time
prerequisites	2m 13s
lint / lint	2m 15s
License Check / License Check	29s
generate_coverage_data	1m 49s
build_sdk (nodejs)	1m 14s
build_sdk (python)	1m 34s
build_sdk (dotnet)	1m 34s
build_sdk (go)	1m 30s
build_sdk (java)	1m 33s
test (nodejs)	2m 17s
test (python)	2m 5s
test (dotnet)	2m 22s
test (go)	1m 59s
test (java)	2m 4s
publish	7m 22s
publish_sdk	4m 11s
Tag release if labeled as needs-release	5s
	36m 36s

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