This update for google-worksans-fonts fixes the following issues:

This update ships google-worksans-fonts 1.6+git145.18037a0.

- Pick TTF format fonts back: the desktop needs ttf to render gui
program, This feature is necessary for SLE-15:SP2(jsc#SLE-12421,
jsc#SLE-12422, jsc#SLE-12893, boo#1172154).