Running gertty on a more modern OS like Fedora 38, you get the following
error:
sqlalchemy.exc.InvalidRequestError: The 'sqlalchemy.orm.mapper()'
function is removed as of SQLAlchemy 2.0. Use the
'sqlalchemy.orm.registry.map_imperatively()` method of the
``sqlalchemy.orm.registry`` class to perform classical mapping.
This updates Gertty to accomodate the changes in SQL Alchemy 2.0.
Change-Id: I793e997d767c8419a0baaac9a074d6997b834a7c
ad414c8410