tests

docs: Add sample Cloud Run example application #5719

Job	Run time
unit tests (3.9)	1m 12s
integration tests (macos-latest, 3.13)	1m 12s
integration tests (macos-latest, 3.9)	3m 29s
unit tests (3.13)	1m 6s
integration tests (windows-latest, 3.9)	1m 31s
integration tests (windows-latest, 3.13)	1m 43s
integration tests (ubuntu-latest, 3.9)	1m 10s
integration tests (ubuntu-latest, 3.13)	1m 4s
	12m 27s

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