Update djangorestframework to 3.14.0 (cookiecutter#3881)

Author: pyup-bot

{{cookiecutter.project_slug}}/requirements/base.txt

@@ -41,7 +41,7 @@ django-compressor==4.1  # https://github.com/django-compressor/django-compressor
 django-redis==5.2.0  # https://github.com/jazzband/django-redis
 {%- if cookiecutter.use_drf == 'y' %}
 # Django REST Framework
-djangorestframework==3.13.1  # https://github.com/encode/django-rest-framework
+djangorestframework==3.14.0  # https://github.com/encode/django-rest-framework
 django-cors-headers==3.13.0 # https://github.com/adamchainz/django-cors-headers
 # DRF-spectacular for api documentation
 drf-spectacular==0.24.1  # https://github.com/tfranzel/drf-spectacular