Bump channels-redis from 4.2.0 to 4.2.1 in /src/requirements

Bumps [channels-redis](https://github.com/django/channels_redis) from 4.2.0 to 4.2.1.
- [Changelog](https://github.com/django/channels_redis/blob/main/CHANGELOG.txt)
- [Commits](django/channels_redis@4.2.0...4.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

src/requirements/production.txt

@@ -1,6 +1,6 @@
 Django==4.2.16
 channels==4.1.0
-channels-redis==4.2.0
+channels-redis==4.2.1
 
 
 asyncio==3.4.3