contrib/packaging/requirements_win32.txt.in

sslutil: rename 'minimumprotocolui' -> 'minimumprotocol'

Before, both 'minimumprotocolui' and 'minimumprotocol' were used, but meaning
the same.

docutils
dulwich
keyring
pygments
# Need to list explicitly so dependency gets pulled in when
# not running on Windows.
pywin32-ctypes