Update GitHub Actions workflows. (#476) #176

Job	Run time
prerequisites	1m 5s
lint / lint	57s
License Check / License Check	24s
generate_coverage_data	4m 5s
build_sdk (nodejs)	1m 28s
build_sdk (python)	1m 29s
build_sdk (dotnet)	1m 25s
build_sdk (go)	1m 47s
build_sdk (java)	1m 18s
test (nodejs)	2m 22s
test (python)	2m 21s
test (dotnet)	2m 9s
test (go)	1m 55s
test (java)	1m 55s
publish	9m 40s
publish_sdk	4m 35s
Tag release if labeled as needs-release	4s
	38m 59s

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