[stix2] Bumped stix2 python library latest updates
[stix2] Bumped stix2 python library latest updates

FloatingGhost/MISP,FloatingGhost/MISP,SteveClement/MISP,FIRSTdotorg/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,FIRSTdotorg/MISP,SteveClement/MISP,MISP/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,SteveClement/MISP,MISP/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,SteveClement/MISP,MISP/MISP