Fix `upload-sarif` not uploading non-`.sarif` files #5852

Job	Run time
Ruby analysis (ubuntu-latest, nightly-latest)	49s
Ruby analysis (ubuntu-latest, default)	46s
Ruby analysis (macos-latest, nightly-latest)	1m 19s
Ruby analysis (macos-latest, default)	57s
Ruby analysis (macos-latest, linked)	1m 8s
Ruby analysis (ubuntu-latest, linked)	48s
	5m 47s

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