Fix `upload-sarif` Action failing if there are no Code Scanning SARIF files #7786

Job	Run time
Packaging: Config file (windows-latest, default)	3m 16s
Packaging: Config file (macos-latest, default)	1m 46s
Packaging: Config file (windows-latest, nightly-latest)	5m 34s
Packaging: Config file (macos-latest, linked)	1m 36s
Packaging: Config file (ubuntu-latest, nightly-latest)	1m 27s
Packaging: Config file (macos-latest, nightly-latest)	2m 7s
Packaging: Config file (windows-latest, linked)	15m 54s
Packaging: Config file (ubuntu-latest, default)	1m 15s
Packaging: Config file (ubuntu-latest, linked)	1m 17s
	34m 12s

Provide feedback