hotfix: 프로필 수정 로직 변경

Author: Woojun-Yoon

gd-yd-api/src/main/java/com/gdyd/gdydapi/service/member/MemberCommandService.java

@@ -36,15 +36,19 @@ public ProfileResponse updateProfile(UpdateProfileRequest request) {
             throw new BusinessException(ErrorCode.INVALID_NICKNAME);
         }
 
-        member.updateNickname(request.nickname());
-        member.updateProfileImage(request.profileImageUrl());
         if (member.getType() == MemberType.UNIVERSITY_STUDENT) {
             UniversityStudent universityStudent = universityStudentService.getUniversityStudentByMemberId(memberId);
+            universityStudent.updateNickname(request.nickname());
+            universityStudent.updateProfileImage(request.profileImageUrl());
             universityStudent.updateGrade(request.grade());
             universityStudent.updateUniversityMajorCategory(request.universityMajorCategory());
+            universityStudentService.save(universityStudent);
         } else {
             HighSchoolStudent highSchoolStudent = highSchoolStudentService.getHighSchoolStudentByMemberId(memberId);
+            highSchoolStudent.updateNickname(request.nickname());
+            highSchoolStudent.updateProfileImage(request.profileImageUrl());
             highSchoolStudent.updateGrade(request.grade());
+            highSchoolStudentService.save(highSchoolStudent);
         }
         return ProfileResponse.from(member);
     }