Latest release of RBAC/UBAC breaks roles

It is now possible for a user to have a role with an empty string. This causes an Exception to be thrown. If you view the Grants for the user (as an OrgAdmin) you will see the empty named roles. I have confirmed with Snowflake this is a new behavior.

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File "<snip>/permifrost/snowflake_connector.py", line 372, in snowflaky
    name_parts = name.split(".")
AttributeError: 'NoneType' object has no attribute 'split'