Update GitHub Actions workflows. (#224) #92

Job	Run time
prerequisites	1m 49s
lint / lint	36s
License Check / License Check	26s
generate_coverage_data	1m 28s
build_sdk (nodejs)	59s
build_sdk (python)	1m 1s
build_sdk (dotnet)	1m 16s
build_sdk (go)	1m 7s
build_sdk (java)	58s
test (nodejs)	1m 1s
test (python)	1m 21s
test (dotnet)	1m 0s
test (go)	40s
test (java)	45s
publish	5m 40s
publish_sdk	3m 4s
Tag release if labeled as needs-release	2s
	23m 13s

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