Bump dompurify from 3.4.2 to 3.4.9 (#8)

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.4.2 to 3.4.9.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/3.4.2...3.4.9)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-version: 3.4.9
  dependency-type: direct:production
...

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package.json

@@ -25,7 +25,7 @@
     "@tauri-apps/plugin-process": "^2.3.1",
     "@tauri-apps/plugin-updater": "^2.10.0",
     "@types/dompurify": "^3.0.5",
-    "dompurify": "^3.4.0",
+    "dompurify": "^3.4.9",
     "highlight.js": "^11.11.1",
     "lucide-react": "1.16.0",
     "marked": "^17.0.4",