Fix `upload-sarif` not uploading non-`.sarif` files #5841

Job	Run time
Ruby analysis (ubuntu-latest, linked)	50s
Ruby analysis (ubuntu-latest, default)	47s
Ruby analysis (ubuntu-latest, nightly-latest)	48s
Ruby analysis (macos-latest, default)	56s
Ruby analysis (macos-latest, linked)	1m 5s
Ruby analysis (macos-latest, nightly-latest)	1m 0s
	5m 26s

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