Bump urllib3 from 2.0.6 to 2.0.7 in /backend

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.0.6 to 2.0.7.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.0.6...2.0.7)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

backend/requirements.txt

@@ -67,7 +67,7 @@ tzdata==2023.3
     # via pytz-deprecation-shim
 tzlocal==5.0.1
     # via apscheduler
-urllib3==2.0.6
+urllib3==2.0.7
     # via -r requirements.in
 whitenoise==6.6.0
     # via -r requirements.in