Update GitHub Actions workflows. (#347) #129

Job	Run time
prerequisites	2m 16s
lint / lint	30s
License Check / License Check	28s
build_sdk (nodejs)	1m 28s
build_sdk (python)	1m 26s
generate_coverage_data	2m 8s
build_sdk (dotnet)	1m 35s
build_sdk (go)	1m 41s
build_sdk (java)	1m 23s
test (nodejs)	2m 20s
test (python)	1m 52s
test (dotnet)	1m 48s
test (go)	1m 48s
test (java)	2m 6s
publish	7m 20s
publish_sdk	3m 55s
Tag release if labeled as needs-release	2s
	34m 6s

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