x11-fonts/spleen: Update to 1.0.3

• Provide spleen-32x64 for vt(4). The vtfontcvt in supported FreeBSD versions cannot deal with it at the moment, so provide a pregenerated version of it for now. This was made possible by the vtfontcvt feature patch from Dmitry Wagin (thanks!) [1].

Changes: https://github.com/fcambus/spleen/releases/tag/1.0.3
PR: 205707 [1]