chore(deps): Bump requests from 2.32.2 to 2.32.4 in /backend

Bumps [requests](https://github.com/psf/requests) from 2.32.2 to 2.32.4.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.32.2...v2.32.4)

---
updated-dependencies:
- dependency-name: requests
  dependency-version: 2.32.4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

backend/requirements.txt

@@ -3,7 +3,7 @@ Flask-RESTful==0.3.9
 Flask-HTTPAuth==4.7.0
 Flask-Cors==3.0.10
 Flask-Login==0.6.2
-requests==2.32.2
+requests==2.32.4
 gunicorn==23.0.0
 sqlalchemy==2.0.4
 python-dotenv==1.0.0