Update docusaurus monorepo to v3

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

website/package.json

@@ -9,8 +9,8 @@
     "deploy": "docusaurus deploy"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-alpha.ffe8b6106",
-    "@docusaurus/preset-classic": "2.0.0-alpha.ffe8b6106",
+    "@docusaurus/core": "3.1.1",
+    "@docusaurus/preset-classic": "3.1.1",
     "classnames": "2.3.0",
     "react": "17.0.2",
     "react-dom": "17.0.2"