chore(deps): bump django from 5.2.9 to 5.2.11 in /backend (#1730)

Bumps [django](https://github.com/django/django) from 5.2.9 to 5.2.11.
- [Commits](django/django@5.2.9...5.2.11)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 5.2.11
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

backend/poetry.lock

@@ -8,7 +8,7 @@ packages = [{ include = 'kernelCI' }]
 
 [tool.poetry.dependencies]
 python = "^3.12"
-django = "^5.2.9"
+django = "^5.2.11"
 djangorestframework = "^3.15.2"
 gunicorn = "^23.0.0"
 psycopg = "^3.1.19"