Bump dompurify and @types/dompurify in /frontend

Bumps [dompurify](https://github.com/cure53/DOMPurify) and [@types/dompurify](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/dompurify). These dependencies needed to be updated together.

Updates `dompurify` from 3.1.7 to 3.2.1
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@3.1.7...3.2.1)

Updates `@types/dompurify` from 3.0.5 to 3.2.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/dompurify)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: "@types/dompurify"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

frontend/package.json

@@ -30,14 +30,14 @@
     "@nuxt/ui": "3.0.0-alpha.9",
     "@nuxtjs/i18n": "9.1.0",
     "@pinia/nuxt": "^0.7.0",
-    "@types/dompurify": "^3.0.5",
+    "@types/dompurify": "^3.2.0",
     "@vueuse/components": "^11.3.0",
     "@vueuse/core": "^11.3.0",
     "@vueuse/nuxt": "^11.3.0",
     "@vueuse/router": "^11.3.0",
     "codemirror": "^6.0.1",
     "date-fns": "^4.1.0",
-    "dompurify": "^3.1.7",
+    "dompurify": "^3.2.1",
     "eslint": "^9.15.0",
     "marked": "^15.0.2",
     "nuxt": "^3.14.1592",