Fix version string.

The version string for `cargo version` was inadvertently changed in #9657 so that it does not include the leading `cargo` as in `cargo 1.53.0 (4369396 2021-04-27)`.

[Beta] backport version string fix

Beta backport of #9727 for 1.55.

Bump cargo-util version.

I neglected to bump the version when moving some APIs over to this crate.

cc #9744

[beta] Backport cargo-util version fix

Backport of #9745 to fix the version for cargo-util.  This should help if someone does `cargo update -p cargo` to ensure they get the correct version of cargo-util.