Update build.yaml on change platforms to aarch64

Author: TGRZiminiar

.github/workflows/build.yaml

@@ -26,7 +26,7 @@ jobs:
         with:
           context: .
           file: Dockerfile
-          platforms: linux/amd64
+          platforms: linux/aarch64
           push: true
           tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
       - name: Deploy to Coolify