Add support for validation jobs to `sync.ts`, and refactor #7242

Job	Run time
Ruby analysis (ubuntu-latest, linked)	52s
Ruby analysis (ubuntu-latest, nightly-latest)	50s
Ruby analysis (macos-latest, linked)	1m 18s
Ruby analysis (ubuntu-latest, default)	49s
Ruby analysis (macos-latest, default)	59s
Ruby analysis (macos-latest, nightly-latest)	1m 12s
	6m 0s

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