[FIX/#146] 회원가입 시 휴대전화 번호 저장 형식 수정

'-' 빼고 숫자만 추출하여 저장

src/main/java/org/sopt/seonyakServer/domain/member/service/MemberService.java

@@ -183,7 +183,7 @@ public MemberJoinResponse patchMemberJoin(MemberJoinRequest memberJoinRequest) {
                 memberJoinRequest.isSubscribed(),
                 memberJoinRequest.nickname(),
                 memberJoinRequest.image(),
-                memberJoinRequest.phoneNumber(),
+                memberJoinRequest.phoneNumber().replaceAll("-", ""),
                 memberJoinRequest.univName(),
                 memberJoinRequest.field(),
                 memberJoinRequest.departmentList()