Update GitHub Actions workflows. (#607) #263

Job	Run time
prerequisites	1m 12s
License Check / License Check	21s
generate_coverage_data	3m 52s
build_sdk (nodejs)	1m 14s
build_sdk (python)	1m 19s
build_sdk (dotnet)	1m 13s
build_sdk (go)	2m 8s
build_sdk (java)	1m 37s
test (nodejs)	8m 27s
test (python)	1m 40s
test (dotnet)	1m 43s
test (go)	1m 51s
test (java)	1m 53s
publish	7m 56s
publish_sdk	3m 2s
Tag release if labeled as needs-release	4s
	39m 32s

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