Changing the GroupName of a ContentType using PowerShell

Hi

 

There is a PnP PowerShell command called Set-PnPField which allows me to change the Group a Site Column is in.

 

But there does not seem to be a corresponding Set-PnPContentType to change the group a Content Type Belongs to.

 

Ideally I would just like to rename the group a Site Column belongs to and the group a Content Type belongs to.

 

I cannot seem to find a PowerShell Script to do this ?

 

Regards

 

Nigel