Bump djangorestframework from 3.14.0 to 3.15.2

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.14.0 to 3.15.2.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](encode/django-rest-framework@3.14.0...3.15.2)

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

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

requirements.txt

@@ -8,7 +8,7 @@ cryptography==38.0.3
 Django==3.1.14
 django-cors-headers==3.2.0
 django-rest-framework==0.1.0
-djangorestframework==3.14.0
+djangorestframework==3.15.2
 django-db-geventpool==4.0.1
 django-request-logging==0.7.1
 django-filter==21.1