Update ruff requirement from ~=0.6.7 to ~=0.8.1

Updates the requirements on [ruff](https://github.com/astral-sh/ruff) to permit the latest version.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.6.7...0.8.1)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:development
...

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

requirements.dev.txt

@@ -1,4 +1,4 @@
 pytest==8.3.3
 twine==5.1.1
 wheel==0.44.0
-ruff~=0.6.7
+ruff~=0.8.1