Currently, it is not possible to publish KB articles in multiple languages at the same time I'm afraid.
I would highly recommend submitting this feature suggestion to the ideas forum.
Our product team, who monitors the forum regularly, can read your specific use case and understand why this would be a useful functionality or change. It also helps other customers facing the same issue to advocate for its implementation on your behalf by upvoting on the thread as well.
Feel free to add your idea to the thread once you've posted it so we can upvote it!