Bugfixes
Drop all network drivers from the initramfs to shrink its size
drastically. Going over the 32 MiB mark might be the reason why so
many Apple machines can't boot 4.1 while they could boot 4.0
(Closes: #17320).
Only allow up to (but excluding) 32 MiB for initramfs accordingly.
Minor improvements and updates
Fix escape sequence in zerotracepen-gdm-failed-to-start.service, to avoid a
warning message (Closes: #17166).