Bump djangorestframework from 3.11.2 to 3.15.2

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.11.2 to 3.15.2.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](encode/django-rest-framework@3.11.2...3.15.2)

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

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

requirements.txt

@@ -5,7 +5,7 @@ chardet==3.0.4
 charset-normalizer==2.0.8
 Django==3.2.14
 django-rest-framework==0.1.0
-djangorestframework==3.11.2
+djangorestframework==3.15.2
 idna==2.8
 isort==4.3.21
 lazy-object-proxy==1.4.3