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Describe the enhancement
Currently, the toolcache only works for semver. Some users may want to opt into storing and retrieving preview/beta versions of dependencies, we should look on how we can support those flows so that those versions can be reused during workflows.

Code Snippet

Ideally, we would support beta/alpha versions, and let users opt in or out when using find so you could do something like

    await tc.cacheFile(downloadPath, 'foo', 'foo', '1.1.0-beta')
    const toolPath: string = tc.find('foo', '1.1.x' {allowPreview: true})

#698