chore(deps): bump daphne from 4.1.2 to 4.2.1

Bumps [daphne](https://github.com/django/daphne) from 4.1.2 to 4.2.1.
- [Changelog](https://github.com/django/daphne/blob/main/CHANGELOG.txt)
- [Commits](https://github.com/django/daphne/compare/4.1.2...4.2.1)

---
updated-dependencies:
- dependency-name: daphne
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -23,7 +23,7 @@ django-import-export==4.3.7
 requests[socks]
 shapely==2.0.7
 python-gnupg==0.5.4
-daphne==4.1.2
+daphne==4.2.1
 drf-spectacular==0.28.0
 drf-spectacular-sidecar==2025.5.1
 django-cors-headers==4.7.0