Bump redis from 4.1.3 to 4.3.1 (#549)

Bumps [redis](https://github.com/redis/redis-py) from 4.1.3 to 4.3.1.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v4.1.3...v4.3.1)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Mariatta Wijaya <Mariatta@users.noreply.github.com>
Co-authored-by: Ezio Melotti <ezio.melotti@gmail.com>

requirements.txt

@@ -3,7 +3,7 @@ git+https://github.com/python/cherry-picker.git@main#egg=cherry_picker
 aiohttp==3.8.1
 gidgethub==5.2.0
 cachetools==5.2.0
-redis==4.1.3
+redis==4.3.1
 celery==5.2.7
 sentry-sdk==1.5.12
 click==8.1.3