⬆️ Bump attrs from 25.3.0 to 25.4.0

Bumps [attrs](https://github.com/sponsors/hynek) from 25.3.0 to 25.4.0.
- [Commits](https://github.com/sponsors/hynek/commits)

---
updated-dependencies:
- dependency-name: attrs
  dependency-version: 25.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 asgiref==3.10.0
 async-generator==1.10
 async-timeout==5.0.1
-attrs==25.3.0
+attrs==25.4.0
 autobahn==24.4.2
 Automat==25.4.16
 backports.zoneinfo;python_version<"3.9"