Bump redis from 3.5.3 to 4.3.4

Bumps [redis](https://github.com/redis/redis-py) from 3.5.3 to 4.3.4.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@3.5.3...v4.3.4)

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

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

Author: dependabot[bot]

requirements.txt

@@ -11,7 +11,7 @@ dateutils==0.6.12
 cloudflare==2.9.11
 raven>=3
 arrow==1.2.2
-redis==3.5.3
+redis==4.3.4
 pytest==7.1.2
 django-redis-cache==3.0.1
 factory-boy==3.2.1