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](https://github.com/astral-sh/ruff/commits)

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

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Author: dependabot[bot]

pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     "promptools[tokenizer]~=0.1.3.5",
     "pymupdf~=1.26.0",
     "rich~=14.2.0",
-    "ruff~=0.14.0",
+    "ruff~=0.15.1",
     "uvicorn~=0.40.0",
     "uvicorn-hmr[all]~=0.1.0",
     "watchfiles~=1.1.0",