Update Next.js/React Flight RCE advisory patches

Updated dependencies to fix Next.js 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

@@ -12,7 +12,7 @@
     "clsx": "^1.2.1",
     "contentlayer": "^0.3.4",
     "little-state-machine": "^4.8.1",
-    "next": "^15.5.2",
+    "next": "15.5.7",
     "next-contentlayer": "^0.3.4",
     "next-themes": "^0.2.1",
     "prism-react-renderer": "^2.4.1",