fix(deps): update dependency @mdx-js/react to v3

Author: renovate[bot]

website/package.json

@@ -19,7 +19,7 @@
     "@docusaurus/core": "2.0.0-beta.14",
     "@docusaurus/preset-classic": "2.0.0-beta.14",
     "@docusaurus/theme-search-algolia": "^2.0.0-beta.9",
-    "@mdx-js/react": "^1.6.21",
+    "@mdx-js/react": "^3.0.0",
     "@svgr/webpack": "^6.0.0",
     "clsx": "^1.1.1",
     "docusaurus-plugin-react-docgen-typescript": "^0.1.0",