chore(deps): bump requests from 2.32.0 to 2.32.4 in /backend

Bumps [requests](https://github.com/psf/requests) from 2.32.0 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@v2.32.0...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

@@ -32,7 +32,7 @@ pyflakes==1.6.0
 Pygments==2.15.0
 pytz==2018.5
 redis==4.5.4
-requests==2.32.0
+requests==2.32.4
 rope==0.11.0
 simplegeneric==0.8.1
 six==1.11.0