Add support for validation jobs to `sync.ts`, and refactor #7262

Job	Run time
Ruby analysis (macos-latest, nightly-latest)	1m 7s
Ruby analysis (macos-latest, default)	59s
Ruby analysis (ubuntu-latest, nightly-latest)	52s
Ruby analysis (macos-latest, linked)	1m 6s
Ruby analysis (ubuntu-latest, linked)	54s
Ruby analysis (ubuntu-latest, default)	49s
	5m 47s

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