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Validate `checkout_path` input in `analyze` action #9054

Job	Run time
Ruby analysis (ubuntu-latest, nightly-latest)	1s
Ruby analysis (macos-latest, linked)	1s
Ruby analysis (macos-latest, nightly-latest)	1s
Ruby analysis (ubuntu-latest, default)	1s
Ruby analysis (macos-latest, default)	1s
Ruby analysis (ubuntu-latest, linked)	1s
	6s