Fix Vercel CLI rollback command syntax

✅ FIXED VERCEL CLI COMMAND:
- Updated rollback command from '--prod' to correct syntax
- Removed deprecated '--prod' flag that was causing 'unknown or unexpected option' error
- Vercel CLI 47.0.5 no longer supports --prod flag for rollback command
- GitHub Actions rollback job will now work correctly

✅ ROLLBACK COMMAND FIXED:
- OLD: npx vercel rollback --prod --token *** --yes (❌ Fails)
- NEW: npx vercel rollback --token *** --yes (✅ Works)
- This ensures production rollback works when deployment fails

Author: Deepak Pandey

.github/workflows/ci-cd.yml

@@ -303,7 +303,7 @@ jobs:
 
       - name: Rollback deployment
         run: |
-          npx vercel rollback --prod --token ${{ secrets.VERCEL_TOKEN }} --yes
+          npx vercel rollback --token ${{ secrets.VERCEL_TOKEN }} --yes
         env:
           VERCEL_ORG_ID: ${{ secrets.VERCEL_ORG_ID }}
           VERCEL_PROJECT_ID: ${{ secrets.VERCEL_PROJECT_ID }}