Update actions/download-artifact action to v5

Author: renovate[bot]

.github/workflows/slsa.yml

@@ -69,7 +69,7 @@ jobs:
         shell: bash
 
       - name: Download ${{ env.REPOSITORY_NAME }}.sha256
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           name: ${{ env.REPOSITORY_NAME }}.sha256