⬆ Bump ruff from 0.15.2 to 0.15.4 (#328)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.15.2 to 0.15.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.2...0.15.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -69,7 +69,7 @@ tests = [
     "fastapi>=0.128.0",
     "mypy==1.19.1",
     "pytest>=7.4.0,<10.0.0",
-    "ruff==0.15.2",
+    "ruff==0.15.4",
     "uvicorn>=0.39.0",
 ]