fix: [stix2 export] Fixed Indicator & ObservedData arguments to avoid syntax error with version < 3.5 of python
fix: [stix2 export] Fixed Indicator & ObservedData arguments to avoid syntax error with version < 3.5 of python

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