Migrate to FAB 5.0.0

[potiuk]

Body

We want to test Fab 5.0.0a8 (After migrating to FAB 4.6.2) - this will allow us to migrate to SQLAlchemy 2

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[vincbeck]

Closing this issue since fab provider is now using flask-appbuilder 5