Build succeeded with git2 v0.19.0. The fix is complete. (#1774)

**Summary:**
- Bumped `git2` from `0.18` to `0.19` in 4 Cargo.toml files
- This brings in libgit2 1.8.1 which supports `index.skipHash`
- Build compiles successfully

crates/deployment/Cargo.toml

@@ -15,7 +15,7 @@ tokio = { workspace = true }
 sqlx = "0.8.6"
 serde_json = { workspace = true }
 tracing = { workspace = true }
-git2 = "^0.18.1"
+git2 = "0.19"
 futures = "0.3.31"
 axum = { workspace = true }