Bump ruff from 0.8.1 to 0.9.4

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.8.1 to 0.9.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.8.1...0.9.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements-tests.txt

@@ -3,4 +3,4 @@ mypy == 1.13.0
 pytest >=7.1.3,<9.0.0
 pytest-asyncio
 pytest-cov >=2.12.0,<7.0.0
-ruff ==0.8.1
+ruff ==0.9.4