fix: [stix2 export] Avoiding issues with MISP events 'Event' field
fix: [stix2 export] Avoiding issues with MISP events 'Event' field

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