deps: update ruff requirement from >=0.8.0 to >=0.15.10

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@0.8.0...0.15.10)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.10
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -38,7 +38,7 @@ dev = [
     "pytest>=8.3.0",
     "pytest-asyncio>=0.24.0",
     "pytest-cov>=7.1.0",
-    "ruff>=0.8.0",
+    "ruff>=0.15.10",
     "mypy>=1.13.0",
     "httpx>=0.28.0",
 ]