Bug#1120710: cjs: switch to girepository-3.0

[Jeremy Bícha]

Source: cjs
Version: 128.0-2

cjs should migrate from gir1.2-girepository-2.0 to
gir1.2-girepository-3.0 as happened in gjs 1.86.

Maybe this will happen in the cjs 140 release.

Thank you,
Jeremy Bícha