Update GitHub Actions workflows. (#495) #187

Job	Run time
prerequisites	4m 30s
License Check / License Check	1m 5s
generate_coverage_data	3m 34s
build_sdk (nodejs)	2m 10s
build_sdk (python)	2m 11s
build_sdk (dotnet)	2m 27s
build_sdk (go)	5m 22s
build_sdk (java)	3m 29s
test (nodejs)	2m 45s
test (python)	3m 15s
test (dotnet)	2m 38s
test (go)	1m 53s
test (java)	1m 55s
publish	52m 45s
publish_sdk	8m 14s
Tag release if labeled as needs-release	4s
	1h 38m 17s

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