fix(deps): update docusaurus monorepo to v2.0.0-beta.6

Author: renovate-bot

docs-website/package.json

@@ -12,8 +12,8 @@
     "clear": "docusaurus clear"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-beta.5",
-    "@docusaurus/preset-classic": "2.0.0-beta.5",
+    "@docusaurus/core": "2.0.0-beta.6",
+    "@docusaurus/preset-classic": "2.0.0-beta.6",
     "@mdx-js/react": "1.6.22",
     "clsx": "1.1.1",
     "react": "17.0.2",