Update GitHub Actions workflows. (#262) #120

Job	Run time
prerequisites	2m 6s
lint / lint	28s
License Check / License Check	22s
generate_coverage_data	1m 32s
build_sdk (nodejs)	1m 5s
build_sdk (python)	1m 8s
build_sdk (dotnet)	1m 8s
build_sdk (go)	1m 31s
build_sdk (java)	1m 13s
test (nodejs)	3m 24s
test (python)	3m 8s
test (dotnet)	3m 4s
test (go)	2m 47s
test (java)	3m 2s
publish	6m 22s
publish_sdk	15m 51s
Tag release if labeled as needs-release	2s
	48m 13s

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