fix: [stix2 export] Making sure attributes have their Galaxy field before trying to parse it
fix: [stix2 export] Making sure attributes have their Galaxy field before trying to parse it

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