Bump gix from 0.49.1 to 0.51.0 (#1136)

Bumps [gix](https://github.com/Byron/gitoxide) from 0.49.1 to 0.51.0.
- [Release notes](https://github.com/Byron/gitoxide/releases)
- [Changelog](https://github.com/Byron/gitoxide/blob/main/CHANGELOG.md)
- [Commits](GitoxideLabs/gitoxide@gix-v0.49.1...gix-v0.51.0)

---
updated-dependencies:
- dependency-name: gix
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>