Update GitHub Actions workflows. (#490) #207

Job	Run time
prerequisites	50s
lint / lint	1m 26s
License Check / License Check	30s
generate_coverage_data	3m 32s
build_sdk (nodejs)	1m 26s
build_sdk (python)	1m 18s
build_sdk (dotnet)	1m 25s
build_sdk (go)	1m 39s
build_sdk (java)	1m 32s
test (nodejs)	3m 3s
test (python)	2m 35s
test (dotnet)	3m 1s
test (go)	2m 34s
test (java)	2m 16s
publish	8m 28s
publish_sdk	5m 55s
Tag release if labeled as needs-release	2s
	41m 32s

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