Bump redis from 4.4.2 to 4.5.1

Bumps [redis](https://github.com/redis/redis-py) from 4.4.2 to 4.5.1.
- [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/v4.4.2...v4.5.1)

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

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

requirements.txt

@@ -12,7 +12,7 @@ Brotli==1.0.9
 uvloop==0.17.0
 httpx-socks[asyncio]==0.7.2
 setproctitle==1.3.2
-redis==4.4.2
+redis==4.5.1
 markdown-it-py==2.1.0
 typing_extensions==4.4.0
 fasttext-predict==0.9.2.1