Fix `upload-sarif` Action failing if there are no Code Scanning SARIF files #5699

Job	Run time
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.18.4)	1m 18s
Go: tracing with legacy workflow (macos-latest, stable-v2.17.6)	5m 54s
Go: tracing with legacy workflow (macos-latest, stable-v2.19.4)	6m 28s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.17.6)	1m 24s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.19.4)	1m 18s
Go: tracing with legacy workflow (macos-latest, stable-v2.20.7)	6m 15s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.20.7)	1m 26s
Go: tracing with legacy workflow (macos-latest, stable-v2.18.4)	5m 16s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.21.4)	1m 28s
Go: tracing with legacy workflow (macos-latest, default)	6m 7s
Go: tracing with legacy workflow (macos-latest, stable-v2.22.4)	5m 58s
Go: tracing with legacy workflow (macos-latest, nightly-latest)	4m 50s
Go: tracing with legacy workflow (macos-latest, linked)	5m 54s
Go: tracing with legacy workflow (ubuntu-latest, default)	1m 17s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.22.4)	1m 19s
Go: tracing with legacy workflow (ubuntu-latest, nightly-latest)	1m 21s
Go: tracing with legacy workflow (macos-latest, stable-v2.21.4)	4m 42s
Go: tracing with legacy workflow (ubuntu-latest, linked)	1m 23s
	1h 3m 38s

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