Update redis requirement from <=4.6.0 to <=5.0.8

Updates the requirements on [redis](https://github.com/redis/redis-py) to permit the latest version.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@2.4.6...v5.0.8)

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

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

setup.py

@@ -31,7 +31,7 @@
         "banal >= 1.0.6, < 2.0.0",
         "normality >= 2.4.0, < 3.0.0",
         "fakeredis >= 2.11.2, < 3.0.0",
-        "redis <= 4.6.0",
+        "redis <= 5.0.8",
         "sqlalchemy >= 1.4.49, < 3.0.0",
         "structlog >= 20.2.0, < 25.0.0",
         "colorama >= 0.4.4, < 1.0.0",