Bump redis from 4.3.4 to 4.4.0 in /tests (#2643)

Bumps [redis](https://github.com/redis/redis-py) from 4.3.4 to 4.4.0.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v4.3.4...v4.4.0)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tests/requirements.txt

@@ -16,7 +16,7 @@ pytest-timeout==2.1.0
 pytest-xdist==3.0.2
 pytest==7.2.0
 py>=1.8.2
-redis==4.3.4
+redis==4.4.0
 requests==2.28.1
 sanic==21.6.2
 semver==2.13.0