gitlabCI is failing because of not enough free space in /var/cache/apt/archives/.
My pipeline failed when submitting a MR today to tails/master, and I could identify:
E: You don't have enough free space in /var/cache/apt/archives/.
I think this may be the reason why lots of gitlabCI tests are failing.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information