karabiner: add missing entry to manifest
karabiner: add missing entry to manifest

Had this in my worktree, obviously, but forgot to include it in 1986546.

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent