Bump docusaurus package version

Summary:
This should fix the vulnerabilities from these pacakges:

```
Package name: node-forge Affected versions: < 1.3.2 Fixed in version: 1.3.2

Package name: axios Affected versions: < 0.30.2 Fixed in version: 0.30.2

Package name: cookie Affected versions: < 0.7.0 Fixed in version: 0.7.0

Package name: follow-redirects Affected versions: <= 1.15.5 Fixed in version: 1.15.6
```

Reviewed By: genevievehelsel

Differential Revision: D90136326

fbshipit-source-id: a5ae79333e3a9fdd40eb394025f074dc5e55a7aa

Author: vilatto

website/package.json

@@ -15,8 +15,8 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "2.1.0",
-    "@docusaurus/preset-classic": "2.1.0",
+    "@docusaurus/core": "2.4.3",
+    "@docusaurus/preset-classic": "2.4.3",
     "@mdx-js/react": "^1.6.21",
     "clsx": "^1.1.1",
     "docusaurus-plugin-internaldocs-fb": "1.8.0",