chore(deps): bump gunicorn from 25.3.0 to 26.0.0 in /src

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 25.3.0 to 26.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](https://github.com/benoitc/gunicorn/compare/25.3.0...26.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 26.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

src/requirements.txt

@@ -1,6 +1,6 @@
 bcrypt==5.0.0
 configparser==7.2.0
-gunicorn==25.3.0
+gunicorn==26.0.0
 sqlalchemy==2.0.48
 Flask==3.1.3
 Werkzeug==3.1.7