Fix React Server Components CVE vulnerabilities (#503)

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]

package.json

@@ -20,7 +20,7 @@
     "@livekit/track-processors": "^0.6.0",
     "livekit-client": "2.16.0",
     "livekit-server-sdk": "2.14.2",
-    "next": "15.2.6",
+    "next": "15.2.8",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "react-hot-toast": "^2.5.2",