Remove s390x build

Author: mendhak

.github/workflows/publish.yml

@@ -53,7 +53,7 @@ jobs:
         uses: docker/build-push-action@v4
         with:
           context: .
-          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x
+          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}