fix(deps): update dependency @mdx-js/react to v2

Author: renovate[bot]

package-lock.json

@@ -25,7 +25,7 @@
   "dependencies": {
     "@docusaurus/core": "2.0.0-beta.15",
     "@docusaurus/preset-classic": "2.0.0-beta.15",
-    "@mdx-js/react": "1.6.22",
+    "@mdx-js/react": "2.3.0",
     "asciinema-player": "3.0.0-rc.1",
     "clsx": "1.1.1",
     "docusaurus-lunr-search": "2.1.15",