x11-toolkits/termit: update to 3.1
From ChangeLog (https://github.com/nonstop/termit/releases/tag/termit-3.1):
- completely switched to Lua 5.3
- disabled annoying menubar on F10
- added new options: scrollOnKeystroke, scrollOnOutput
- refactored several deprecated GTK functions
- fixed several bugs
- replaced appdata with modern metainfo
PR: 244336
Submitted by: bob@eager.cx (maintainer)