Fix `upload-sarif` Action failing if there are no Code Scanning SARIF files #7769

Job	Run time
Packaging: Config and input (ubuntu-latest, linked)	1m 53s
Packaging: Config and input (ubuntu-latest, default)	1m 42s
Packaging: Config and input (windows-latest, default)	3m 10s
Packaging: Config and input (macos-latest, linked)	2m 2s
Packaging: Config and input (macos-latest, nightly-latest)	1m 50s
Packaging: Config and input (windows-latest, linked)	2m 52s
Packaging: Config and input (macos-latest, default)	1m 55s
Packaging: Config and input (windows-latest, nightly-latest)	5m 34s
Packaging: Config and input (ubuntu-latest, nightly-latest)	1m 36s
	22m 34s

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