Bump redis from 3.5.3 to 4.0.1

Bumps [redis](https://github.com/redis/redis-py) from 3.5.3 to 4.0.1.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@3.5.3...v4.0.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -23,7 +23,7 @@ include=[
 
 [tool.poetry.dependencies]
 python = "^3.7"
-redis = "^3.5.3"
+redis = ">=3.5.3,<5.0.0"
 aioredis = "^2.0.0"
 pydantic = "^1.8.2"
 click = "^8.0.1"