Parse and generate YAML in `sync_back.ts` #11687

Job	Run time
check-codeql-versions	14s
analyze-other (python)	59s
analyze-other (actions)	52s
analyze-javascript (ubuntu-24.04)	4m 49s
analyze-javascript (ubuntu-24.04, linked)	4m 17s
analyze-javascript (windows-2022)	5m 56s
analyze-javascript (macos-14)	5m 14s
analyze-javascript (windows-2025, linked)	6m 58s
analyze-javascript (windows-2022, linked)	6m 2s
analyze-javascript (ubuntu-22.04)	4m 41s
analyze-javascript (macos-15, linked)	8m 16s
analyze-javascript (macos-14, linked)	7m 31s
analyze-javascript (windows-2025)	6m 32s
analyze-javascript (ubuntu-22.04, linked)	4m 28s
analyze-javascript (macos-15)	10m 3s
	1h 16m 52s

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