Bump redis from 5.2.0 to 5.2.1

Bumps [redis](https://github.com/redis/redis-py) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v5.2.0...v5.2.1)

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

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

requirements-optional.txt

@@ -1,6 +1,6 @@
 # For running tests and checking code quality using these modules.
 pytest-cov==6.0.0
-redis==5.2.0
+redis==5.2.1
 pre-commit==4.0.1
 ruff==0.8.2