devel/pdcurses: update to 3.9
Full changelog: https://github.com/wmcbrine/PDCurses/releases/tag/3.9
https://github.com/wmcbrine/PDCurses/releases/tag/3.8 https://github.com/wmcbrine/PDCurses/releases/tag/3.7 https://github.com/wmcbrine/PDCurses/releases/tag/3.6