website: bump dompurify from 3.0.6 to 3.1.6 in /website (#11402)

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.0.6 to 3.1.6.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/3.0.6...3.1.6)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-type: indirect
...

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website/package-lock.json

@@ -7154,8 +7154,9 @@
             }
         },
         "node_modules/dompurify": {
-            "version": "3.0.6",
+            "version": "3.1.6",
-            "license": "(MPL-2.0 OR Apache-2.0)"
+            "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.1.6.tgz",
+            "integrity": "sha512-cTOAhc36AalkjtBpfG6O8JimdTMWNXjiePT2xQH/ppBGi/4uIpmj8eKyIkMJErXWARyINV/sB38yf8JCLF5pbQ=="
         },
         "node_modules/domutils": {
             "version": "3.1.0",