x11-fonts/opensans-ttf: Update 20180831 => 3.003, switch upstream, take maintainership
- Change upstream to https://github.com/googlefonts/opensans.
- Make portclippy happy.
- Finish renaming x11-fonts/open-sans → x11/opensans-ttf.
PR: 291692
Approved by: Florian Limberger <flo@snakeoilproductions.net> (former maintainer, innactive since 2021-01-05)