fix running curses interface on python 3.13

With python 3.13 the pipes module got removed which causes an error on trying to run canto-curses. canto-curses does import it in one place, but the module isn't used anymore: https://github.com/themoken/canto-curses/commit/c6ae73061776ac7ae0d12bcd2e02ca068a8815b4

Closes #1