fix(deps): update docusaurus monorepo to v2.4.0

Author: renovate[bot]

website/package.json

@@ -14,8 +14,8 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "2.3.1",
-    "@docusaurus/preset-classic": "2.3.1",
+    "@docusaurus/core": "2.4.0",
+    "@docusaurus/preset-classic": "2.4.0",
     "@mdx-js/react": "1.6.22",
     "@svgr/webpack": "6.5.1",
     "clsx": "1.2.1",