build(deps): bump @mdx-js/react from 1.6.22 to 2.0.0 in /website

Bumps [@mdx-js/react](https://github.com/mdx-js/mdx/tree/HEAD/packages/react) from 1.6.22 to 2.0.0.
- [Release notes](https://github.com/mdx-js/mdx/releases)
- [Changelog](https://github.com/mdx-js/mdx/blob/main/changelog.md)
- [Commits](https://github.com/mdx-js/mdx/commits/2.0.0/packages/react)

---
updated-dependencies:
- dependency-name: "@mdx-js/react"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

website/package.json

@@ -20,7 +20,7 @@
   "dependencies": {
     "@docusaurus/core": "^2.0.0-beta.15",
     "@docusaurus/preset-classic": "^2.0.0-beta.14",
-    "@mdx-js/react": "^1.6.21",
+    "@mdx-js/react": "^2.0.0",
     "@svgr/webpack": "^6.2.1",
     "amplitude-js": "^8.16.1",
     "clsx": "^1.1.1",