Fix React Server Components CVE vulnerabilities (#23)

Updated dependencies to fix Next.js and React CVE vulnerabilities.

The fix-react2shell-next tool automatically updated the following packages to their secure versions:
- next
- react-server-dom-webpack
- react-server-dom-parcel  
- react-server-dom-turbopack

All package.json files have been scanned and vulnerable versions have been patched to the correct fixed versions based on the official React advisory.

Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com>

Author: vercel[bot]

docs/package-lock.json

@@ -9,7 +9,7 @@
     "postinstall": "fumadocs-mdx"
   },
   "dependencies": {
-    "next": "15.2.2",
+    "next": "15.2.8",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "fumadocs-ui": "15.0.17",