build(deps): bump git2 from 0.13.21 to 0.13.22 (#88)

Bumps [git2](https://github.com/rust-lang/git2-rs) from 0.13.21 to 0.13.22.
- [Release notes](https://github.com/rust-lang/git2-rs/releases)
- [Commits](rust-lang/git2-rs@0.13.21...0.13.22)

---
updated-dependencies:
- dependency-name: git2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]