chore(deps-dev): bump ruff from 0.6.3 to 0.6.8 in /scaleway-async

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.6.3 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@0.6.3...0.6.8)

---
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]

scaleway-async/poetry.lock

@@ -28,7 +28,7 @@ scaleway-core = "*"
 
 [tool.poetry.group.dev.dependencies]
 scaleway-core = { path = "../scaleway-core", develop = true }
-ruff = ">=0.5.0,<0.6.4"
+ruff = ">=0.5.0,<0.6.9"
 mypy = "^1.5.1"
 
 [build-system]