Workflow: Resolve issue with download-artifact@v3 being deprecated

Author: lamATnginx

.github/workflows/build-push.yml

@@ -47,7 +47,7 @@ jobs:
           run: | 
               node performance/lighthouse-script.js
         - name: Download the artifact for main
-          uses: actions/download-artifact@v3
+          uses: actions/download-artifact@v4
           with:
             name: lighthouse-reports
             path: ./main-report