Update python-requests-gssapi to version 1.2.3 / rev 3 via SR 958699
https://build.opensuse.org/request/show/958699
by user mcepl + dimstar_suse
- Update to 1.2.3:
- Drop python2 compat glue
- Drop external mock dependency
- Use USER_NAME instead of HOSTBASED_SERVICE for user
principals
- Remove unused imports in example code
- Fix typo in explicit mech example