Update GitHub Actions workflows. (#483) #204

Job	Run time
prerequisites	2m 30s
License Check / License Check	26s
generate_coverage_data	1m 58s
build_sdk (nodejs)	1m 14s
build_sdk (python)	1m 35s
build_sdk (dotnet)	1m 32s
build_sdk (go)	1m 51s
build_sdk (java)	1m 21s
test (nodejs)	9m 42s
test (python)	1m 39s
test (dotnet)	1m 53s
test (go)	2m 4s
test (java)	1m 35s
publish	6m 0s
publish_sdk	4m 20s
Tag release if labeled as needs-release	4s
	39m 44s

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