gutenprint-locales binary package in Ubuntu Bionic amd64

 This package contains the i18n files of Gutenprint, used by
 libgutenprint2, printer-driver-gutenprint and escputil. It is also
 used by the Print plugin for the GIMP, gimp-gutenprint.
 .
 They are needed when you want the programs in Gutenprint to print
 their messages in other languages than US English.
 .
 Gutenprint is the print facility for the GIMP, and in addition a
 suite of drivers that may be used with common UNIX spooling systems
 using GhostScript or CUPS. These drivers provide printing quality
 for UNIX/Linux on a par with proprietary vendor-supplied drivers in
 many cases, and can be used for many of the most demanding printing
 tasks. Gutenprint was formerly known as Gimp-Print.

Source package