chore(deps)(deps): bump git2 from 0.18.3 to 0.20.2

Bumps [git2](https://github.com/rust-lang/git2-rs) from 0.18.3 to 0.20.2.
- [Changelog](https://github.com/rust-lang/git2-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/git2-rs@git2-0.18.3...git2-0.20.2)

---
updated-dependencies:
- dependency-name: git2
  dependency-version: 0.20.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -23,7 +23,7 @@ serde = { workspace = true }
 toml = { workspace = true }
 anyhow = { workspace = true }
 thiserror = { workspace = true }
-git2 = "0.18"
+git2 = "0.20"
 reqwest = { version = "0.11", features = ["json"] }
 dotenvy = "0.15"
 tokio = { version = "1.48", features = ["full"] }