Set non-default keyservers
Try to fix keyserver issues. By using the new upstream default keyserver: https://salsa.debian.org/debian/gnupg2/blob/93daa0064ee29372d93661cc6a9aa990f8c52414/debian/NEWS for python
The google golang signing key hasn't been made available there though. So I've swapped that one to the ubuntu keysever, which does have it.
Edited by DJ Mountney