Bump ruff from 0.16.5 to 0.16.6

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.16.5 to 0.16.6.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.16.5...0.16.6)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.16.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -58,7 +58,7 @@ optional-dependencies.dev = [
     "pytest-beartype-tests==2026.8.16",
     "pytest-cov==7.1.0",
     "requests==2.34.2",
-    "ruff==0.16.5",
+    "ruff==0.16.6",
     # We add shellcheck-py not only for shell scripts and shell code blocks,
     # but also because having it installed means that ``actionlint-py`` will
     # use it to lint shell commands in GitHub workflow files.