build(deps-dev): bump ruff in the dev-deps group across 1 directory

Bumps the dev-deps group with 1 update in the / directory: [ruff](https://github.com/astral-sh/ruff).


Updates `ruff` from 0.6.5 to 0.6.8
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.6.5...0.6.8)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-deps
...

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