How to use Shortcuts app to mute/unmute MS Teams from anywhere (globally)?

The standard keybinding for MS Teams mute toggle is ⌘ShiftM. However, it only works if Teams is the current focussed application. So when I'm working on a document or typing notes in another app, I have to switch to the application and then toggle mute. Is there a way to use Shortcuts to make a global mute toggle for MS Teams?