Migrate from SqlAlchemy 1.4 -> 2.0

[MichaelTiemannOSC]

This migration guide provides steps for migrating from legacy 1.4 to current 2.0:

https://docs.sqlalchemy.org/en/20/changelog/migration_20.html

As notebooks are updated to work with the latest osc_ingest_tools library, so too should that library track the latest SqlAlchemy, which is now at version 2.0.5 and increasingly in use across the ecosystem.