Bump attrs from 25.3.0 to 25.4.0 (#6235)

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 aiodns==3.5.0
 aiohttp==3.12.15
 atomicwrites-homeassistant==1.4.1
-attrs==25.3.0
+attrs==25.4.0
 awesomeversion==25.8.0
 blockbuster==1.5.25
 brotli==1.1.0