Update daphne requirement from ==4.1.* to ==4.2.* in /server (#337)

Updates the requirements on [daphne](https://github.com/django/daphne) to permit the latest version.
- [Changelog](https://github.com/django/daphne/blob/main/CHANGELOG.txt)
- [Commits](django/daphne@4.1.0...4.2.0)

---
updated-dependencies:
- dependency-name: daphne
  dependency-version: 4.2.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

server/requirements.txt

@@ -39,7 +39,7 @@ gunicorn==23.0.0
 uvicorn[standard]==0.34.2
 
 # dev
-daphne==4.1.*
+daphne==4.2.*
 black==24.10.0
 isort==6.0.1
 flake8==7.2.0