build(deps): update ruff requirement from ~=0.14.0 to ~=0.15.1

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@0.14.0...0.15.1)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -16,7 +16,7 @@ dependencies = [
     "python-slugify~=8.0.4",
     "qdrant-client~=1.16.0",
     "rich~=14.2.0",
-    "ruff~=0.14.0",
+    "ruff~=0.15.1",
     "tenacity~=9.1.2",
     "uvicorn~=0.40.0",
     "uvicorn-hmr[all]~=0.1.0",