Bump redis from 5.0.7 to 5.0.8 in /api

Bumps [redis](https://github.com/redis/redis-py) from 5.0.7 to 5.0.8.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v5.0.7...v5.0.8)

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

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

api/requirements.txt

@@ -1,5 +1,5 @@
 dynaconf==3.2.5
-redis==5.0.7
+redis==5.0.8
 fastapi==0.111.0
 uvicorn==0.30.6
 structlog==24.4.0