chore(deps): bump redis[hiredis] in /reference-apps/fastapi

Bumps [redis[hiredis]](https://github.com/redis/redis-py) from 7.1.0 to 7.2.1.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v7.1.0...v7.2.1)

---
updated-dependencies:
- dependency-name: redis[hiredis]
  dependency-version: 7.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

reference-apps/fastapi/requirements.txt

@@ -17,7 +17,7 @@ pymongo==4.16.0
 # Redis and Caching
 # redis 4.3.0+ required for redis.asyncio.cluster module used by fastapi-cache2
 # redis 4.6.0 is the latest 4.x version compatible with fastapi-cache2 (<5.0.0 requirement)
-redis[hiredis]==7.1.0  # fastapi-cache2 0.2.2 requires redis>=4.2.0rc1,<5.0.0
+redis[hiredis]==7.2.1  # fastapi-cache2 0.2.2 requires redis>=4.2.0rc1,<5.0.0
 fastapi-cache2[redis]==0.2.2  # Response caching
 
 # RabbitMQ