build(deps): bump ruff in /.github/workflows in the pip group (#499)

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


Updates `ruff` from 0.7.1 to 0.8.1
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.7.1...0.8.1)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip
...

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

.github/workflows/requirements.txt

@@ -3,4 +3,4 @@
 
 # ci deps
 # -------
-ruff==0.7.1
+ruff==0.8.1