If you use pandas with SQLAlchemy, you should be aware that pandas might not be fully compatible with SQLAlchemy 2.0 yet.
Some github issues:
https://github.com/pandas-dev/pandas/issues/40686
https://github.com/pandas-dev/pandas/issues/40460
I'm not actively following how compatible pandas has become, but you should absolutely test your code if you want to upgrade to 2.0.