Fix `upload-sarif` Action failing if there are no Code Scanning SARIF files #7771

Job	Run time
Packaging: Action input (macos-latest, default)	2m 13s
Packaging: Action input (windows-latest, linked)	3m 11s
Packaging: Action input (ubuntu-latest, default)	1m 45s
Packaging: Action input (windows-latest, default)	2m 51s
Packaging: Action input (windows-latest, nightly-latest)	5m 11s
Packaging: Action input (macos-latest, nightly-latest)	2m 13s
Packaging: Action input (ubuntu-latest, linked)	1m 15s
Packaging: Action input (ubuntu-latest, nightly-latest)	2m 16s
Packaging: Action input (macos-latest, linked)	1m 42s
	22m 37s

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