Fix Windows Magma Build (#2032)

Use same https://github.com/pytorch/builder/actions/runs/11709825051/job/32619002225

Author: atalman

.github/workflows/build-magma-windows.yml

@@ -43,7 +43,7 @@ jobs:
     needs: build-windows-magma
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
       - name: Push MAGMA to S3
         run: |
           # Setting the following variable avoids errors in GHA https://github.com/aws/aws-cli/issues/5623