chore(deps): bump dompurify and @types/dompurify (#3493)

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 3.2.0 to 3.2.1
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@3.2.0...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:production
  update-type: version-update:semver-patch
- dependency-name: "@types/dompurify"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

showcases/patternhub/package.json

@@ -23,7 +23,7 @@
     "test:e2e": "npx playwright test --config=../playwright.patternhub-config.ts"
   },
   "dependencies": {
-    "dompurify": "3.2.0",
+    "dompurify": "3.2.1",
     "highlight.js": "^11.10.0",
     "next": "15.0.3",
     "react": "18.3.1",
@@ -36,7 +36,7 @@
     "@mdx-js/loader": "^3.1.0",
     "@mdx-js/react": "^3.1.0",
     "@next/mdx": "^15.0.3",
-    "@types/dompurify": "3.0.5",
+    "@types/dompurify": "3.2.0",
     "@types/node": "22.9.1",
     "@types/react": "18.3.12",
     "@types/react-dom": "18.3.1",