build(deps): bump redis from 4.6.0 to 5.0.1 in /backend/uclapi

Bumps [redis](https://github.com/redis/redis-py) from 4.6.0 to 5.0.1.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v4.6.0...v5.0.1)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

backend/uclapi/requirements.txt

@@ -29,7 +29,7 @@ python-dateutil==2.8.2
 python-jose==3.3.0
 pytz==2023.3
 requests-futures==1.0.1
-redis==4.6.0
+redis==5.0.1
 requests==2.31.0
 sentry-sdk==1.29.2
 Sphinx==4.3.0