Bump certifi from 2024.7.4 to 2024.12.14 in /backend

Bumps [certifi](https://github.com/certifi/python-certifi) from 2024.7.4 to 2024.12.14.
- [Commits](certifi/python-certifi@2024.07.04...2024.12.14)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/pyproject.toml

@@ -48,7 +48,7 @@ dependencies = [
     "django-environ==0.10.0",
     "django-model-utils==4.5.1",
     "django-timezone-field==7.0",
-    "certifi==2024.7.4",
+    "certifi==2024.12.14",
     "chardet==5.2.0",
     "idna==3.7",
     "requests==2.32.3",