feat: add linux/arm64 docker build

Author: fevrax

.github/workflows/docker.yaml

@@ -67,7 +67,7 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: fevrax/json-tools:latest
           labels: ${{ steps.meta.outputs.labels }}