security/py-gssapi: Upgrade port to 1.10.1

Make now use of setuptools (PEP 517) instead of distutils.

PR: 290561
Approved by: john@saltant.com (maintainer)
Differential Revision: https://reviews.freebsd.org/D53370
Release Notes: https://github.com/pythongssapi/python-gssapi/releases/tag/v1.10.1