Add `merge_group` trigger to required checks to prepare for merge queue #11510

Job	Run time
analyze-other (python)	56s
check-codeql-versions	50s
analyze-other (actions)	55s
analyze-javascript (windows-2022)	6m 9s
analyze-javascript (ubuntu-22.04)	4m 41s
analyze-javascript (ubuntu-24.04)	4m 31s
analyze-javascript (ubuntu-24.04, linked)	4m 16s
analyze-javascript (windows-2025, linked)	6m 43s
analyze-javascript (windows-2025)	7m 4s
analyze-javascript (macos-14, linked)	7m 50s
analyze-javascript (macos-15, linked)	8m 46s
analyze-javascript (ubuntu-22.04, linked)	4m 44s
analyze-javascript (macos-15)	8m 57s
analyze-javascript (windows-2022, linked)	6m 9s
analyze-javascript (macos-14)	5m 16s
	1h 17m 47s

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