chore(deps): bump git2 in /ecc2 in the cargo group across 1 directory

Bumps the cargo group with 1 update in the /ecc2 directory: [git2](https://github.com/rust-lang/git2-rs).


Updates `git2` from 0.19.0 to 0.20.4
- [Changelog](https://github.com/rust-lang/git2-rs/blob/git2-0.20.4/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/git2-rs/compare/git2-0.19.0...git2-0.20.4)

---
updated-dependencies:
- dependency-name: git2
  dependency-version: 0.20.4
  dependency-type: direct:production
  dependency-group: cargo
...

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

ecc2/Cargo.toml

@@ -19,7 +19,7 @@ tokio = { version = "1", features = ["full"] }
 rusqlite = { version = "0.32", features = ["bundled"] }
 
 # Git integration
-git2 = "0.19"
+git2 = "0.20"
 
 # Serialization
 serde = { version = "1", features = ["derive"] }