⬆️ Bump ruff from 0.12.8 to 0.12.9 in the python-packages group (TeamGraphix#333)

Bumps the python-packages group with 1 update: [ruff](https://github.com/astral-sh/ruff).


Updates `ruff` from 0.12.8 to 0.12.9
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.12.8...0.12.9)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.12.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-packages
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-dev.txt

@@ -2,7 +2,7 @@
 mypy==1.17.1
 pre-commit # for language-agnostic hooks
 pyright
-ruff==0.12.8
+ruff==0.12.9
 
 # Stubs
 types-networkx==3.5.0.20250712