chore(deps-dev): bump ruff from 0.1.8 to 0.1.9 in /requirements

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.1.8 to 0.1.9.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@v0.1.8...v0.1.9)

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

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

Author: dependabot[bot]

requirements/pre-dev.txt

@@ -1 +1 @@
-ruff==0.1.8
+ruff==0.1.9