PUG Gantry and Base mounts for larger m3 square nuts

This excellent mod removes the Z chain from a voron 2.4 https://www.printables.com/model/712328-no-z-chain-for-voron-24

It requires DIN562 thickness square nuts which are thinner than the ones I had on hand. 

I remixed the models in tinkercad to widen the square nut holes to take up to a 3mm thick square nut.

This modifies the PUG mounting brackets for the gantry and the base to take thicker m3 square nuts.