Bump github.com/go-git/go-git/v5 from 5.19.0 to 5.19.1

Bumps [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) from 5.19.0 to 5.19.1.
- [Release notes](https://github.com/go-git/go-git/releases)
- [Changelog](https://github.com/go-git/go-git/blob/main/HISTORY.md)
- [Commits](https://github.com/go-git/go-git/compare/v5.19.0...v5.19.1)

---
updated-dependencies:
- dependency-name: github.com/go-git/go-git/v5
  dependency-version: 5.19.1
  dependency-type: direct:production
...

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

go.mod

@@ -20,7 +20,7 @@ require (
 	github.com/digitorus/timestamp v0.0.0-20250524132541-c45532741eea
 	github.com/go-chi/chi/v5 v5.2.5
 	github.com/go-chi/cors v1.2.2
-	github.com/go-git/go-git/v5 v5.19.0
+	github.com/go-git/go-git/v5 v5.19.1
 	github.com/jackc/pgx/v5 v5.9.2
 	github.com/jhillyerd/enmime v1.3.0
 	github.com/microcosm-cc/bluemonday v1.0.27