Update channels-redis requirement from ==4.1.* to ==4.2.* in /server

Updates the requirements on [channels-redis](https://github.com/django/channels_redis) to permit the latest version.
- [Changelog](https://github.com/django/channels_redis/blob/main/CHANGELOG.txt)
- [Commits](https://github.com/django/channels_redis/commits)

---
updated-dependencies:
- dependency-name: channels-redis
  dependency-type: direct:production
...

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

server/requirements.txt

@@ -4,7 +4,7 @@ aiohttp==3.8.6
 beautifulsoup4==4.12.*
 celery==5.3.*
 channels==4.0.*
-channels_redis==4.1.*
+channels_redis==4.2.*
 Django==4.2.*
 django-cors-headers==4.3.*
 django-decorator-include==3.0