Support requesting latest version from toolcache with `tools: toolcache` #5899

Job	Run time
Go: tracing with custom build steps (macos-latest, stable-v2.17.6)	3m 2s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.20.7)	1m 9s
Go: tracing with custom build steps (macos-latest, stable-v2.20.7)	2m 27s
Go: tracing with custom build steps (ubuntu-latest, linked)	1m 3s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.22.4)	1m 4s
Go: tracing with custom build steps (macos-latest, linked)	2m 7s
Go: tracing with custom build steps (ubuntu-latest, default)	1m 1s
Go: tracing with custom build steps (macos-latest, stable-v2.18.4)	2m 14s
Go: tracing with custom build steps (macos-latest, stable-v2.22.4)	2m 6s
Go: tracing with custom build steps (ubuntu-latest, nightly-latest)	1m 2s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.21.4)	1m 17s
Go: tracing with custom build steps (macos-latest, stable-v2.19.4)	3m 6s
Go: tracing with custom build steps (macos-latest, stable-v2.21.4)	3m 0s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.17.6)	1m 24s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.19.4)	1m 7s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.18.4)	1m 13s
Go: tracing with custom build steps (macos-latest, nightly-latest)	3m 50s
Go: tracing with custom build steps (macos-latest, default)	2m 29s
	34m 41s

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