Bump ruff from 0.14.8 to 0.15.4

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.14.8 to 0.15.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.8...0.15.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.4
  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 @@
 colorlog==6.10.1
 homeassistant
 pip==25.3
-ruff==0.14.8
+ruff==0.15.4
 pre-commit==4.5.0
 bumpver==2025.1131
 urllib3>=2