chg: [tests] stix 1.2.0.6 python requirements updated
chg: [tests] stix 1.2.0.6 python requirements updated

FloatingGhost/MISP,MISP/MISP,SteveClement/MISP,Rafiot/MISP,SteveClement/MISP,devnull-/MISP,Rafiot/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,devnull-/MISP,SteveClement/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,Rafiot/MISP,MISP/MISP,SteveClement/MISP,Rafiot/MISP,devnull-/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,devnull-/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,FloatingGhost/MISP,MISP/MISP