Only works with Python 3.9 because of dependencies

[Djontleman]

It is currently only possible to use the plugin if you are using Python 3.9 specifically.

This CLI plugin currently uses these 2 packages:

• Very old version (1.0.0) of prettytable. This version does not support Python versions above 3.9.
• Very new version (2.2.2) of pandas. This version only supports Python versions of 3.9 or above.