Bump django-cacheops from 4.0.6 to 5.0 in /cvat/requirements (#1710)

Bumps [django-cacheops](https://github.com/Suor/django-cacheops) from 4.0.6 to 5.0.
- [Release notes](https://github.com/Suor/django-cacheops/releases)
- [Changelog](https://github.com/Suor/django-cacheops/blob/master/CHANGELOG)
- [Commits](https://github.com/Suor/django-cacheops/compare/4.0.6...5.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

cvat/requirements/base.txt

@@ -2,7 +2,7 @@ click==6.7
 Django==2.2.13
 django-appconf==1.0.2
 django-auth-ldap==1.4.0
-django-cacheops==4.0.6
+django-cacheops==5.0
 django-compressor==2.2
 django-rq==2.0.0
 EasyProcess==0.2.3