chore(deps): bump djangorestframework in /community_portal

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.13.1 to 3.15.2.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](encode/django-rest-framework@3.13.1...3.15.2)

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

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

community_portal/requirements.txt

@@ -1,6 +1,6 @@
 asgiref==3.5.2
 Django==4.0.5
-djangorestframework==3.13.1
+djangorestframework==3.15.2
 python-dotenv==0.21.0
 pytz==2024.1
 sqlparse==0.4.3