python-build: update to 0.8.0; drop toml dep
python-build: update to 0.8.0; drop toml dep

we have tomli now

oscarfv/MINGW-packages,JPeterMugaas/MINGW-packages,JPeterMugaas/MINGW-packages,lhmouse/MINGW-packages,fabiangreffrath/MINGW-packages,JPeterMugaas/MINGW-packages,oscarfv/MINGW-packages,stahta01/MINGW-packages,lhmouse/MINGW-packages,JPeterMugaas/MINGW-packages,JPeterMugaas/MINGW-packages,fabiangreffrath/MINGW-packages,oroppas/MINGW-packages,lhmouse/MINGW-packages,lhmouse/MINGW-packages,fabiangreffrath/MINGW-packages,oscarfv/MINGW-packages,oscarfv/MINGW-packages,stahta01/MINGW-packages,oroppas/MINGW-packages,oroppas/MINGW-packages,oroppas/MINGW-packages,lhmouse/MINGW-packages,JPeterMugaas/MINGW-packages,stahta01/MINGW-packages,oroppas/MINGW-packages,fabiangreffrath/MINGW-packages,stahta01/MINGW-packages,oscarfv/MINGW-packages,lhmouse/MINGW-packages,oscarfv/MINGW-packages,fabiangreffrath/MINGW-packages,oroppas/MINGW-packages,stahta01/MINGW-packages,fabiangreffrath/MINGW-packages,stahta01/MINGW-packages