Upgrade deps and use util in Playground

apps/website/package.json

@@ -16,8 +16,8 @@
     "typecheck": "tsc"
   },
   "dependencies": {
-    "@docusaurus/core": "2.1.0",
-    "@docusaurus/preset-classic": "2.1.0",
+    "@docusaurus/core": "^2.2.0",
+    "@docusaurus/preset-classic": "^2.2.0",
     "@emotion/react": "^11.10.4",
     "@emotion/styled": "^11.10.4",
     "@ffmpeg/ffmpeg": "^0.12.0-alpha.0",
@@ -33,7 +33,7 @@
     "react-dom": "^17.0.2"
   },
   "devDependencies": {
-    "@docusaurus/module-type-aliases": "2.1.0",
+    "@docusaurus/module-type-aliases": "^2.2.0",
     "@tsconfig/docusaurus": "^1.0.5",
     "@types/ace": "^0.0.48",
     "docusaurus-plugin-typedoc": "^0.17.5",