Remove branch filter for PR event in CodeQL workflow #6452

Job	Run time
Ruby analysis (ubuntu-latest, default)	49s
Ruby analysis (macos-latest, nightly-latest)	59s
Ruby analysis (ubuntu-latest, nightly-latest)	45s
Ruby analysis (macos-latest, default)	1m 1s
Ruby analysis (macos-latest, linked)	1m 13s
Ruby analysis (ubuntu-latest, linked)	58s
	5m 45s

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