Bump ruff from 0.15.5 to 0.15.6

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.15.5 to 0.15.6.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](https://github.com/astral-sh/ruff/compare/0.15.5...0.15.6)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -48,7 +48,7 @@ test = [
 ]
 lint = [
     "pylint==4.0.5",
-    "ruff==0.15.5",
+    "ruff==0.15.6",
 ]
 docs = [
     "sphinx>=7,<10",