Update dependency @mdx-js/react to v3

Author: renovate[bot]

package-lock.json

@@ -17,7 +17,7 @@
   "dependencies": {
     "@docusaurus/core": "2.1.0",
     "@docusaurus/preset-classic": "2.1.0",
-    "@mdx-js/react": "1.6.22",
+    "@mdx-js/react": "3.1.0",
     "clsx": "1.1.1",
     "prism-react-renderer": "1.3.1",
     "react": "17.0.2",