Bump libgit2-sys from 0.14.1+1.5.0 to 0.14.2+1.5.1 (#6600)

Bumps [libgit2-sys](https://github.com/rust-lang/git2-rs) from 0.14.1+1.5.0 to 0.14.2+1.5.1.
- [Release notes](https://github.com/rust-lang/git2-rs/releases)
- [Commits](rust-lang/git2-rs@0.14.1...libgit2-sys-0.14.2)

---
updated-dependencies:
- dependency-name: libgit2-sys
  dependency-type: indirect
...

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