system/{bash-binsh,dash-binsh,build-tools}: add provider_priority

This makes bash-binsh the default and should fix compatibility in
/usr/bin/abuild for populating a chroot with only abuild, alpine-base
(adelie-base), build-base (build-tools), and git

See merge request !37

Bump cups and cups-filters



See merge request !35

It tried creating directories multiple times without -p, so it failed.

This makes bash-binsh the default and should fix compatibility in
/usr/bin/abuild for populating a chroot with only abuild, alpine-base
(adelie-base), build-base (build-tools), and git

user/feh: bump to 2.26.3



See merge request !34