Bump djangorestframework from 3.14.0 to 3.15.2 (#723)

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
...

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

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ Django==4.2.11
 psycopg2==2.9.7
 gunicorn==21.2.0 #production server
 whitenoise==6.5.0 #serving swagger static files
-djangorestframework==3.14.0
+djangorestframework==3.15.2
 pylint==2.17.5
 pydash==7.0.6
 django-cors-headers==4.2.0