Fabian Boehm 1c4bb214d2 Skip tmux tests on Github Actions macOS
This lacks the tmux-256color terminfo entry, leading to spurious
warnings like

warning: Could not set up terminal. <= no check matches
warning: TERM environment variable set to \'tmux-256color\'. <= no check matches
warning: Check that this terminal type is supported on this system. <= no check matches
warning: Using fallback terminal type \'ansi\'. <= no check matches
2022-06-09 18:56:20 +02:00
..
2021-08-30 17:16:19 +02:00