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Validate `checkout_path` input in `analyze` action #2122

Job	Run time
Analysis kinds (ubuntu-latest, nightly-latest, risk-assessment)	1m 0s
Analysis kinds (ubuntu-latest, linked, code-scanning,code-quality)	1m 4s
Analysis kinds (ubuntu-latest, nightly-latest, code-quality)	49s
Analysis kinds (ubuntu-latest, linked, risk-assessment)	55s
Analysis kinds (ubuntu-latest, linked, code-quality)	1m 1s
Analysis kinds (ubuntu-latest, linked, code-scanning)	58s
Analysis kinds (ubuntu-latest, nightly-latest, code-scanning,code-quality)	1m 2s
Analysis kinds (ubuntu-latest, nightly-latest, code-scanning)	1m 1s
	7m 50s