Gandi is taking away my free mailboxes (unused but still)  so it's
only fair we take away archlinux.page from them and move it to
Hetzner. We also gain full control of the domain this way, because
right now we need to ask SPI for e.g. transfer authorization code.
Assuming nobody objects, I believe we can do the transfer next
weekend, or at least poke SPI to get us the code and proceed from