fix : 버전 고정 문제 수정 및 애그리거트 타입 작성#23

DongHyeonka merged 2 commits intoSynapsesa:developSynapsesa/Account-server:developfrom

DongHyeonka:feat/domain-creation-eventDongHyeonka/Account-server:feat/domain-creation-eventCopy head branch name to clipboard