Update GitHub Actions workflows. (#402) #200

Job	Run time
prerequisites	2m 24s
lint / lint	27s
License Check / License Check	21s
generate_coverage_data	5m 23s
build_sdk (nodejs)	1m 21s
build_sdk (python)	1m 13s
build_sdk (dotnet)	1m 36s
build_sdk (go)	1m 36s
build_sdk (java)	1m 15s
test (nodejs)	2m 30s
test (python)	2m 19s
test (dotnet)	1m 46s
test (go)	1m 58s
test (java)	1m 59s
publish	11m 15s
publish_sdk	3m 39s
Tag release if labeled as needs-release	2s
	41m 4s

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