fix: www/package.json & www/yarn.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-CROSSSPAWN-8303230
- https://snyk.io/vuln/SNYK-JS-BABELTRAVERSE-5962462
- https://snyk.io/vuln/SNYK-JS-WEBPACKDEVMIDDLEWARE-6476555
- https://snyk.io/vuln/SNYK-JS-PATHTOREGEXP-7925106
- https://snyk.io/vuln/SNYK-JS-SERIALIZEJAVASCRIPT-6147607
- https://snyk.io/vuln/SNYK-JS-WEBPACK-7840298
- https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692

www/package.json

@@ -15,10 +15,10 @@
     "typecheck": "tsc"
   },
   "dependencies": {
-    "@docusaurus/core": "^2.4.0",
-    "@docusaurus/preset-classic": "^2.4.0",
+    "@docusaurus/core": "^3.6.0",
+    "@docusaurus/preset-classic": "^3.6.0",
     "@docusaurus/theme-common": "^2.4.0",
-    "@docusaurus/theme-live-codeblock": "^2.4.0",
+    "@docusaurus/theme-live-codeblock": "^3.6.0",
     "@mdx-js/react": "^1.6.22",
     "@restart/hooks": "^0.4.9",
     "ast-types": "^0.14.2",
@@ -33,7 +33,7 @@
     "prism-react-renderer": "^1.3.5",
     "raw-loader": "^4.0.2",
     "react": "^17.0.2",
-    "react-docgen": "^5.4.3",
+    "react-docgen": "^6.0.0",
     "react-dom": "^17.0.2",
     "react-live": "^2.4.1",
     "sass": "^1.62.0",