Log Message:
py-requests-mock: updated to 1.12.1

1.12.1
Set python_requires to >3 to prevent installation in python2 deployments.

1.12.0
Update copyright year
Remove py2
Allow raw parameter to accept callable like body elements
Improve type definition of Mocker.__call__
Drop PBR Support
fix(mocker.pyi): fix Mocker class type hints
Remove unused six dependency