tests

docs: Add sample Cloud Run example application #5717

Job	Run time
unit tests (3.13)	1m 8s
unit tests (3.9)	1m 10s
integration tests (windows-latest, 3.13)	2m 7s
integration tests (macos-latest, 3.13)	1m 22s
integration tests (ubuntu-latest, 3.13)	1m 36s
integration tests (macos-latest, 3.9)	1m 26s
integration tests (windows-latest, 3.9)	1m 26s
integration tests (ubuntu-latest, 3.9)	1m 7s
	11m 22s

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