linux
If you don't want or cant use the gui, you can manually edit the Konsole profile.
Edit the file ~/.local/share/konsole/<profile_name>.profile and add the following line to the Appearance section:
LineSpacing[$i]=3
The last value is the number of pixels you want to add to the line spacing. For example, if you want to add 2 pixels to the line spacing, you would add the following line to the Appearance section:
[Appearance]
ColorScheme=InspiredGithub
Font=Liberation Mono,10,-1,5,50,0,0,0,0,0
LineSpacing[$i]=2
This allowed me to adjust the line spacing for vim in the terminal.
From:
https://unix.stackexchange.com/questions/1111/how-to-change-the-line-spacing-in-konsole
https://invent.kde.org/utilities/konsole/-/commit/57994c1d5ddd917ac037b7107253775a256eebfb