Overlay: use restoreCache() timeout #5717

Job	Run time
Ruby analysis (macos-latest, nightly-latest)	57s
Ruby analysis (ubuntu-latest, default)	52s
Ruby analysis (ubuntu-latest, linked)	51s
Ruby analysis (macos-latest, linked)	1m 15s
Ruby analysis (ubuntu-latest, nightly-latest)	50s
Ruby analysis (macos-latest, default)	1m 14s
	5m 59s

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