Bump djangorestframework from 3.10.3 to 3.11.0 in /backend/uclapi
Bump djangorestframework from 3.10.3 to 3.11.0 in /backend/uclapi

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.10.3 to 3.11.0.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](https://github.com/encode/django-rest-framework/compare/3.10.3...3.11.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
uclapi/uclapi,uclapi/uclapi,uclapi/uclapi,uclapi/uclapi