chore(deps): update django requirement from ~=5.1.1 to ~=5.1.2

Updates the requirements on [django](https://github.com/django/django) to permit the latest version.
- [Commits](django/django@5.1.1...5.1.2)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

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

backend/requirements.txt

@@ -3,7 +3,7 @@ pytest~=8.3.3
 openpyxl~=3.1.5
 requests~=2.32.3
 pytz~=2024.2
-Django~=5.1.1
+Django~=5.1.2
 numpy~=2.1.2
 django-cors-headers~=4.5.0
 python-dotenv~=1.0.1