ICU breaks things when updating

[dr460nf1r3]

@dr460nf1r3

This turned out to be a tricky one, rebuilds did not solve this as the package still demands libicu 70

Alright, this was caused by our builders using an outdated mirror as package source ( shame on you, Cloudflare! ). Now the real builds can start.

@fcinq

I have just to wait a rebuild

This is the way. Builders are working

edit: thunderbird-appmenu is updated