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Allow precise update to prerelease. ### What does this PR try to resolve? This is a feature that attempts to support updates to pre-release versions via `cargo update --precise`. when `precise-pre-release` used, the prerelase version will be taking consider as compatible version. That said, we can update to any compatible pre-release version. The logic of checking the compatibility of pre-release versions is currently tentative and does not take many conditions into account, this part of the logic makes more sense when implemented in semver. Use `-Zunstable-options` instead of `-Zprecise-pre-release`. ### How should we test and review this PR? ### Additional information Part of https://github.com/rust-lang/cargo/issues/13290