~mil/mobroute-tickets#53: Transito: Update to gio 0.6

Updating to gio v0.6.0 is successful on linux, but creates a failed build on android as giohyperlink needs to be updated: https://github.com/inkeliz/giohyperlink/issues/
Seems like the solution will be to updating to use gio-plugins, rather then giohyperlink, since the former is being ported to gio v0.6.0 (https://github.com/gioui-plugins/gio-plugins/issues/65)
It's unclear whether gio-plugins supports Linux as a platform as its not listed as a supported platform in its readme (giohyperlink did via xdg-open so there shouldn't be anything blocking architecturally)