Bump redis from 4.5.4 to 5.0.5

Bumps [redis](https://github.com/redis/redis-py) from 4.5.4 to 5.0.5.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v4.5.4...v5.0.5)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -303,7 +303,7 @@ pyvips==2.2.3
     # via large-image-source-vips
 rcssmin==1.1.1
     # via django-compressor
-redis==4.5.4
+redis==5.0.5
     # via geotrek (setup.py)
 reportlab==4.1.0
     # via