Bump git2 from 0.16.0 to 0.16.1 (#6601)

Bumps [git2](https://github.com/rust-lang/git2-rs) from 0.16.0 to 0.16.1.
- [Release notes](https://github.com/rust-lang/git2-rs/releases)
- [Commits](rust-lang/git2-rs@git2-curl-0.16.0...0.16.1)

---
updated-dependencies:
- dependency-name: git2
  dependency-type: indirect
...

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

Author: dependabot[bot]