Update ruff requirement from <0.7,>=0.6 to >=0.6,<0.9

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@0.6.0...0.8.1)

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

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

pyproject.toml

@@ -65,7 +65,7 @@ develop = [
     "codespell>=2.3,<2.4",
     "hatchling",
     "mdformat>=0.7.18,<0.8",
-    "ruff>=0.6,<0.7",
+    "ruff>=0.6,<0.9",
     "toml",
     "twine",
     "wheel",