pkg_resources is deprecated as an API

[Jskarie]

I'm getting the following warning.
Looks like we have until November 30th to remove the dependency pkg_resources.

site-packages/CyberSource/api_client.py:19: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
import pkg_resources