build(deps): bump dompurify from 3.4.12 to 3.4.13 in /Main/frontend (#401)

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.4.12 to 3.4.13.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@3.4.12...3.4.13)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-version: 3.4.13
  dependency-type: direct:production
...

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Author: dependabot[bot]

Main/frontend/package.json

@@ -15,7 +15,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "dompurify": "3.4.12",
+    "dompurify": "3.4.13",
     "katex": "^0.18.1",
     "markdown-it": "^14.1.0",
     "markdown-it-texmath": "^1.0.0",