databases/py-sqlalchemy-utils: Change OPTIONS_DEFAULT from SQLALCHEMY14 to SQLALCHEMY20 after 59c51372a83e96bcd8314a60bf91a0d82a9f0f94
- Bump PORTREVISION for dependency change
Regarding the dependent ports, both devel/py-taskflow and www/py-calibreweb depend on py-sqlalchemy20 by default.