bump docusaurus

Author: eriveltonelias

package.json

@@ -12,9 +12,9 @@
     "fetch-sponsors": "node scripts/fetch-sponsors.js"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-alpha.75",
-    "@docusaurus/plugin-google-analytics": "2.0.0-alpha.75",
-    "@docusaurus/preset-classic": "2.0.0-alpha.75",
+    "@docusaurus/core": "^2.0.0-beta.4",
+    "@docusaurus/plugin-google-analytics": "^2.0.0-beta.4",
+    "@docusaurus/preset-classic": "2.0.0-beta.4",
     "@octokit/graphql": "^4.5.7",
     "@react-navigation/core": "^5.14.3",
     "classnames": "^2.2.6",