Having all builds in a single place makes it possible for us to download
all the things from there, by specifying a single job ID.
But there seems to be a performance issue here. All IUKs as of Tails 4.9
are below 8 GB, but require close to 30 minutes to get processed…
Compared to the 1.5 hour of actual work (*building* those IUKs), that's
an extra wait I'd be happy to spare… Lots of things to do when preparing
a release, the shorter we wait, the better!