ci: build only arm for now

Author: rubyowo

.github/workflows/build-and-push.yml

@@ -48,7 +48,7 @@ jobs:
       - name: Build and push
         uses: docker/build-push-action@v6
         with:
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/arm64 #,linux/amd64
           push: true
           cache-from: type=gha
           cache-to: type=gha,mode=max