fix: packages/doc-builder/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-WEBPACKDEVMIDDLEWARE-6476555
- https://snyk.io/vuln/SNYK-JS-PATHTOREGEXP-7925106
- https://snyk.io/vuln/SNYK-JS-WEBPACK-7840298

packages/doc-builder/package.json

@@ -16,8 +16,8 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "3.1.0",
-    "@docusaurus/preset-classic": "3.1.0",
+    "@docusaurus/core": "3.6.0",
+    "@docusaurus/preset-classic": "3.6.0",
     "@mdx-js/react": "3.0.0",
     "clsx": "2.1.0",
     "prism-react-renderer": "2.3.1",