fix: Address PyAthena dependency problem

[Akeboshiwind]

Summary of Changes

As seen here: laughingman7743/PyAthena#189
The 2.0.0 version of PyAthena doesn't install SQLAlchemy for some reason
This PR fixes that

This issue can be reproduced in a similar way to the linked Issue:

$ mkdir /tmp/test
$ cd /tmp/test
$ python3 -m venv venv
$ source venv/bin/activate
(venv) $ echo 'amundsen-databuilder[athena]==4.0.3' > requirements.txt
(venv) $ pip3 install -r requirements.txt 2>/dev/null | grep Ignoring
  Ignoring sqlalchemy: markers 'extra == "SQLAlchemy"' don't match your environment

This fix just ignores version 2.0.0 for now, presumably until that dependency issue is fixed.

Tests

As this is a dependency issue I don't think there's a test that can be run 🤷‍♂️

CheckList

• PR title addresses the issue accurately and concisely. Example: "Updates the version of Flask to v1.0.2"
  • In case you are adding a dependency, check if the license complies with the ASF 3rd Party License Policy.
• PR includes a summary of changes.
• PR adds unit tests, updates existing unit tests, OR documents why no test additions or modifications are needed.
• In case of new functionality, my PR adds documentation that describes how to use it.
  • All the public functions and the classes in the PR contain docstrings that explain what it does
• PR passes make test

The make test fails for me. But that "shouldn't" be because of this dep change, I would guess more likely a setup issue :/.