github: use unique id for artifacts uploaded to workflow

This is a breaking change in v4. Use a quick workaround of using
the strategy index so that we don't need to pass name from one step
of the job to the other.

Author: carlaKC

.github/workflows/push-docker-image.yml

@@ -67,7 +67,7 @@ jobs:
       - name: Upload digest
         uses: actions/upload-artifact@v4
         with:
-          name: digests${{ inputs.artifact_name }}
+          name: digests-${{ inputs.artifact_name }}-${{ strategy.job-index }}
           path: /tmp/digests/*
           if-no-files-found: error
           retention-days: 1
@@ -77,10 +77,15 @@ jobs:
     needs:
       - build
     steps:
-      - name: Download digests
+      - name: Download digest 0
         uses: actions/download-artifact@v4
         with:
-          name: digests${{ inputs.artifact_name }}
+          name: digests-${{ inputs.artifact_name }}-0
+          path: /tmp/digests
+      - name: Download digest 1
+        uses: actions/download-artifact@v4
+        with:
+          name: digests-${{ inputs.artifact_name }}-1
           path: /tmp/digests
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3