Bump markdown-it from 12.0.4 to 12.3.2 in /extensions/extension-editing (#140597)

Bumps [markdown-it](https://github.com/markdown-it/markdown-it) from 12.0.4 to 12.3.2.
- [Release notes](https://github.com/markdown-it/markdown-it/releases)
- [Changelog](https://github.com/markdown-it/markdown-it/blob/master/CHANGELOG.md)
- [Commits](https://github.com/markdown-it/markdown-it/compare/12.0.4...12.3.2)

---
updated-dependencies:
- dependency-name: markdown-it
  dependency-type: direct:production
...

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extensions/extension-editing/package.json

@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "jsonc-parser": "^2.2.1",
-    "markdown-it": "^12.0.4",
+    "markdown-it": "^12.3.2",
     "parse5": "^3.0.2",
     "vscode-nls": "^5.0.0"
   },