Support requesting latest version from toolcache with `tools: toolcache` #5934

Job	Run time
Ruby analysis (ubuntu-latest, nightly-latest)	1m 0s
Ruby analysis (macos-latest, default)	1m 15s
Ruby analysis (macos-latest, nightly-latest)	58s
Ruby analysis (ubuntu-latest, default)	51s
Ruby analysis (macos-latest, linked)	1m 6s
Ruby analysis (ubuntu-latest, linked)	49s
	5m 59s

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