chg: [composer] Raise minimal PHP version to 7.2 and disable support for 8.0
chg: [composer] Raise minimal PHP version to 7.2 and disable support for 8.0

SteveClement/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP