Update Docusaurus to 2.4

Author: markerikson

website/package.json

@@ -10,8 +10,8 @@
   },
   "dependencies": {
     "@dipakparmar/docusaurus-plugin-umami": "^2.0.6",
-    "@docusaurus/core": "2.0.0-beta.7",
-    "@docusaurus/preset-classic": "2.0.0-beta.7",
+    "@docusaurus/core": "2.4.1",
+    "@docusaurus/preset-classic": "2.4.1",
     "classnames": "^2.2.6",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",