build: bump ruff from 0.8.4 to 0.8.6

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.8.4 to 0.8.6.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.8.4...0.8.6)

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

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

requirements.txt

@@ -187,7 +187,7 @@ requests==2.32.3
     # via
     #   pygithub
     #   sphinx
-ruff==0.8.4
+ruff==0.8.6
     # via rocm-docs-core (pyproject.toml)
 six==1.17.0
     # via python-dateutil