Bump djangorestframework from 3.11.1 to 3.11.2 in /cvat/requirements (#2984)

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.11.1 to 3.11.2.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](https://github.com/encode/django-rest-framework/compare/3.11.1...3.11.2)

Signed-off-by: dependabot[bot] <support@github.com>

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

cvat/requirements/base.txt

@@ -27,7 +27,7 @@ GitPython==3.1.8
 coreapi==2.3.3
 django-filter==2.3.0
 Markdown==3.2.2
-djangorestframework==3.11.1
+djangorestframework==3.11.2
 Pygments==2.7.4
 drf-yasg==1.17.1
 Shapely==1.7.1