Update docusaurus monorepo to ^2.3.0

Author: renovate[bot]

package.json

@@ -11,8 +11,8 @@
     "lint": "yarn eslint ./src"
   },
   "dependencies": {
-    "@docusaurus/core": "^2.2.0",
-    "@docusaurus/preset-classic": "^2.2.0",
+    "@docusaurus/core": "^2.3.0",
+    "@docusaurus/preset-classic": "^2.3.0",
     "react": "^17.0.2",
     "react-dom": "^17.0.2"
   },