Set Pro Micro pads to 0.8128 mm (for the spring headers)

[joric]

It would be cool to set pro micro pads to 0.8128 mm for japanese con-through pins (https://yushakobo.jp/shop/a01mc-00) as on Corne (specs allow 0.81-0.85 mm max) . Con-through pins help test and debug keyboards and swap and flip controllers and just all the way amazing. I've already uploaded modified gerbers here for my own use but maybe apply that to the original as well https://github.com/joric/jorne/wiki/Free-PCBs#gerbers