Bump dompurify from 3.0.9 to 3.0.11 in /frontend

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.0.9 to 3.0.11.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@3.0.9...3.0.11)

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

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

frontend/package.json

@@ -37,7 +37,7 @@
     "@vueuse/router": "^10.9.0",
     "codemirror": "^6.0.1",
     "date-fns": "^3.6.0",
-    "dompurify": "^3.0.9",
+    "dompurify": "^3.0.11",
     "element-plus": "^2.6.2",
     "eslint": "^8.57.0",
     "marked": "^12.0.1",