devel/lazygit: Update to 0.9
While here, switch to USES=go:modules. Thank you decke@ and dmgk@!
Relnotes https://github.com/jesseduffield/lazygit/releases/tag/v0.8.2
https://github.com/jesseduffield/lazygit/releases/tag/0.8.3 https://github.com/jesseduffield/lazygit/releases/tag/v0.9