Fix `upload-sarif` potentially initialising CodeQL twice #5264

Job	Run time
Ruby analysis (ubuntu-latest, nightly-latest)	1m 9s
Ruby analysis (ubuntu-latest, default)	1m 6s
Ruby analysis (macos-latest, linked)	1m 35s
Ruby analysis (ubuntu-latest, linked)	1m 5s
Ruby analysis (macos-latest, nightly-latest)	1m 32s
Ruby analysis (macos-latest, default)	1m 27s
	7m 54s

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