Fix `upload-sarif` Action failing if there are no Code Scanning SARIF files #7770

Job	Run time
Packaging: Action input (ubuntu-latest, default)	1m 36s
Packaging: Action input (windows-latest, linked)	9m 58s
Packaging: Action input (macos-latest, linked)	1m 26s
Packaging: Action input (macos-latest, nightly-latest)	1m 52s
Packaging: Action input (windows-latest, nightly-latest)	7m 49s
Packaging: Action input (macos-latest, default)	2m 43s
Packaging: Action input (windows-latest, default)	2m 52s
Packaging: Action input (ubuntu-latest, linked)	1m 57s
Packaging: Action input (ubuntu-latest, nightly-latest)	1m 58s
	32m 11s

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