Fix React Server Components CVE vulnerabilities

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

@@ -54,7 +54,7 @@
     "mailchimp-api-v3": "^1.15.0",
     "marked": "^4.0.18",
     "motion": "^11.13.3",
-    "next": "^15.0.3",
+    "next": "15.0.7",
     "next-auth": "^4.24.11",
     "next-mdx-remote": "^5.0.0",
     "next-pwa": "^5.6.0",