build(deps): bump dompurify from 3.4.9 to 3.4.12

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.4.9 to 3.4.12.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@3.4.9...3.4.12)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-version: 3.4.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -44,7 +44,7 @@
     "codemirror": "6.0.2",
     "core-js": "3.36.1",
     "css-vars-ponyfill": "2.4.9",
-    "dompurify": "3.4.9",
+    "dompurify": "3.4.12",
     "flexver": "1.1.1",
     "font-awesome": "4.7.0",
     "imurmurhash": "0.1.4",