Licence is not recognized by security tools

[Cjkjvfnby]

The latest changes to the license were not deployed to PyPi yet 0adf37c

On the PyPi, the license is License: LICENSE.txt.

Some internal Nexus firewall could treat it as an "unknown" license and automatically quarantine the library.

Also, there is a typo in the setup.py

- license_files=['LICENCE.txt'],
+ license_files=['LICENSE.txt'],

[jborean93]

Thanks for picking up the typo, v1.10.1 has been released with these changes https://github.com/pythongssapi/python-gssapi/releases/tag/v1.10.1.