chore(deps): update docker/setup-qemu-action action to v4

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up QEMU (for multi-arch builds)
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v4
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3