Bump gix-hash from 0.19.0 to 0.20.1

Bumps [gix-hash](https://github.com/GitoxideLabs/gitoxide) from 0.19.0 to 0.20.1.
- [Release notes](https://github.com/GitoxideLabs/gitoxide/releases)
- [Changelog](https://github.com/GitoxideLabs/gitoxide/blob/main/CHANGELOG.md)
- [Commits](GitoxideLabs/gitoxide@gix-hash-v0.19.0...gix-hash-v0.20.1)

---
updated-dependencies:
- dependency-name: gix-hash
  dependency-version: 0.20.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]