Update redis requirement from <6.0.0,>=4.3.3 to >=4.3.3,<7.0.0

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](https://github.com/redis/redis-py/compare/v4.3.3...v6.1.0)

---
updated-dependencies:
- dependency-name: redis
  dependency-version: 6.1.0
  dependency-type: direct:production
...

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

pyproject.toml

@@ -162,7 +162,7 @@ oauth = [
     "httpx-oauth >=0.13"
 ]
 redis = [
-    "redis >=4.3.3,<6.0.0",
+    "redis >=4.3.3,<7.0.0",
 ]
 
 [project.urls]