Bulk delete should skip accounts that have roles assigned by default

[hendersj]

I'd like to suggest an enhancement - this script is pretty dangerous because the user list starts with the first user created in the environment, so if you just run it and haven't pulled the ID for your initial user, you'll end up deleting it and losing access/control of your PingOne for Customers account.

I think checking to see if there are any of the default roles assigned to the account would be a good safety feature to prevent accidental deletion of important users.