Update GitHub Actions workflows. (#1401) #344

Job	Run time
prerequisites	3m 28s
generate_coverage_data	5m 10s
build_sdk (nodejs)	3m 44s
build_sdk (python)	3m 37s
build_sdk (dotnet)	3m 30s
build_sdk (go)	5m 4s
build_sdk (java)	3m 18s
test (nodejs)	22m 18s
test (python)	5m 36s
test (dotnet)	5m 10s
test (go)	3m 54s
test (java)	2m 39s
publish	25m 39s
publish_sdk	10m 33s
Tag release if labeled as needs-release	5s
	1h 43m 45s

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