Add support for validation jobs to `sync.ts`, and refactor #7151

Job	Run time
Ruby analysis (macos-latest, linked)	1m 2s
Ruby analysis (ubuntu-latest, default)	51s
Ruby analysis (ubuntu-latest, linked)	48s
Ruby analysis (macos-latest, default)	1m 20s
Ruby analysis (ubuntu-latest, nightly-latest)	49s
Ruby analysis (macos-latest, nightly-latest)	1m 15s
	6m 5s

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