I need a shortcut to stop media (podcasts) playing on a HomePod mini

I have a shortcut which starts podcasts playing on a HomePod mini at a particular time of day. I want to have another shortcut to stop the media playing, also at a particular time. I’m well aware that I can ask Siri to stop playback, but that is not what I want in this case.

Is there a shortcuts action for stopping audio media playing on the HomePod, or any other workaround that automates the required action?