Bump ruff from 0.12.3 to 0.12.4 in /requirements

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.12.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements/test.txt

@@ -3,5 +3,5 @@ packaging==25.0
 pytest==8.4.1
 pytest-xdist==3.8.0
 pytest-cov==6.2.1
-ruff==0.12.3
+ruff==0.12.4
 setuptools==80.9.0