Update GitHub Actions workflows. (#480) #202

Job	Run time
prerequisites	2m 36s
License Check / License Check	33s
build_sdk (nodejs)	1m 14s
build_sdk (python)	1m 16s
generate_coverage_data	1m 46s
build_sdk (dotnet)	1m 8s
build_sdk (go)	1m 38s
build_sdk (java)	1m 17s
test (nodejs)	9m 10s
test (python)	1m 46s
test (dotnet)	1m 54s
test (go)	1m 40s
test (java)	1m 55s
publish	5m 56s
publish_sdk	7m 22s
Tag release if labeled as needs-release	2s
	41m 13s

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