Bump redis from 3.5.3 to 4.5.3

Bumps [redis](https://github.com/redis/redis-py) from 3.5.3 to 4.5.3.
- [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...v4.5.3)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ uvicorn==0.12.1
 websockets==9.1
 fastapi==0.65.2
 aioredis==1.3.1
-redis==3.5.3
+redis==4.5.3
 uvloop==0.15.2
 jinja2==2.11.3
 aiofiles==0.6.0