Update channels-redis requirement from ~=4.2.0 to ~=4.2.1

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](django/channels_redis@4.2.0...4.2.1)

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

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

requirements.txt

@@ -9,7 +9,7 @@ daphne~=4.1.2
 supervisor~=4.2.5
 reportlab~=4.2.5
 channels~=4.2.0 
-channels_redis~=4.2.0
+channels_redis~=4.2.1
 babel~=2.16.0
 django-cors-headers~=4.6.0
 packaging~=24.2