Remove linux/arm/v7 from publish_docker_image (it does not work)

Context: #568

.github/workflows/publish_docker_image.yml

@@ -36,7 +36,7 @@ jobs:
         with:
           context: .
           file: docker/Dockerfile
-          platforms: linux/amd64,linux/arm/v7,linux/arm64/v8
+          platforms: linux/amd64,linux/arm64/v8
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}