Bump @docusaurus/core from 2.0.0-beta.21 to 2.2.0

Bumps [@docusaurus/core](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus) from 2.0.0-beta.21 to 2.2.0.
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v2.2.0/packages/docusaurus)

---
updated-dependencies:
- dependency-name: "@docusaurus/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

apps/website/package.json

@@ -16,7 +16,7 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "^2.0.0-beta.21",
+    "@docusaurus/core": "^2.2.0",
     "@docusaurus/preset-classic": "^2.0.0-beta.21",
     "@docusaurus/types": "^2.0.0-beta.21",
     "@mdx-js/react": "^1.6.21",