Bump git2 from 0.13.22 to 0.13.23 (paritytech#10238)

Bumps [git2](https://github.com/rust-lang/git2-rs) from 0.13.22 to 0.13.23.
- [Release notes](https://github.com/rust-lang/git2-rs/releases)
- [Commits](rust-lang/git2-rs@0.13.22...0.13.23)

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

Signed-off-by: dependabot[bot] <support@github.com>

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

utils/frame/generate-bags/Cargo.toml

@@ -21,6 +21,6 @@ sp-io = { version = "4.0.0-dev", path = "../../../primitives/io" }
 
 # third party
 chrono = { version = "0.4.19" }
-git2 = { version = "0.13.20", default-features = false }
+git2 = { version = "0.13.23", default-features = false }
 num-format = { version = "0.4.0" }
 structopt = "0.3.21"