requirements: upgrade to latest pylint
requirements: upgrade to latest pylint

Change-Id: I44b2cd7c7d3fcfdf66c09104525ff1b00c21c9be

dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild