Bump markdown-it from 8.4.2 to 12.3.2

Bumps [markdown-it](https://github.com/markdown-it/markdown-it) from 8.4.2 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](markdown-it/markdown-it@8.4.2...12.3.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "guid": "0.0.12",
     "jquery": "^3.5.1",
     "js-sha512": "^0.3.0",
-    "markdown-it": "^8.4.2",
+    "markdown-it": "^12.3.2",
     "prop-types": "^15.7.2",
     "react": "^15.7.0",
     "react-bootstrap": "^0.31.5",