Add-DatabricksMemberToGroup uses Invoke-RestMethod with the -OutFile parameter but $OutFile isn't set

[asos-andrewgoad]

Add-DatabricksMemberToGroup uses Invoke-RestMethod with the -OutFile parameter but $OutFile isn't set, so the cmdlet fails with Cannot validate argument on parameter 'OutFile'. The argument is null or empty. Provide an argument that is not null or empty, and then try the command again.

Workaround is to set $OutFile before calling the cmdlet i.e. $OutFile = 'databrickscfg'