Sql alchemy v2

[SarthakSingh31]

This is working on some migrations but not working on all.
The only one I was able to make it work with was https://github.com/blockchain-etl/ethereum-etl/tree/develop.

There are a lot of complications when migrating sqlalchemy.

1. They might also be using flask-sqlalchemy which also needs to be upgraded to version >= 3.0.2.
2. They also be using alembic which also needs to be upgraded usually.
3. Some part of the migration sometimes starts raising errors within sqlalchemy itself. I have not been able to diagnose the source. (https://github.com/wazuh/wazuh is one of the repos that run into this issue)