Parse and generate YAML in `sync_back.ts` #11694

Job	Run time
check-codeql-versions	16s
analyze-other (actions)	52s
analyze-other (python)	58s
analyze-javascript (macos-14, linked)	5m 31s
analyze-javascript (windows-2025)	6m 19s
analyze-javascript (ubuntu-24.04, linked)	4m 54s
analyze-javascript (windows-2022)	6m 27s
analyze-javascript (windows-2025, linked)	6m 54s
analyze-javascript (ubuntu-24.04)	4m 46s
analyze-javascript (macos-14)	8m 33s
analyze-javascript (ubuntu-22.04, linked)	4m 34s
analyze-javascript (macos-15)	7m 22s
analyze-javascript (ubuntu-22.04)	4m 34s
analyze-javascript (windows-2022, linked)	6m 7s
analyze-javascript (macos-15, linked)	11m 24s
	1h 19m 31s

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