refactor: 유저 생일 업데이트 dto를 signup dto와 통일

Author: larama-C

src/main/java/com/back/web7_9_codecrete_be/domain/users/dto/request/UserUpdateBirthRequest.java

@@ -1,17 +1,20 @@
 package com.back.web7_9_codecrete_be.domain.users.dto.request;
 
-import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
-import java.time.LocalDate;
-
 @Getter
 @NoArgsConstructor
 @AllArgsConstructor
 public class UserUpdateBirthRequest {
 
-    @NotNull(message = "생일은 필수 입력값입니다.")
-    private LocalDate birth;
+    @NotBlank(message = "생년월일은 필수입니다.")
+    @Pattern(
+            regexp = "\\d{4}-\\d{2}-\\d{2}",
+            message = "생년월일은 yyyy-MM-dd 형식이어야 합니다."
+    )
+    private String birth;
 }

src/main/java/com/back/web7_9_codecrete_be/domain/users/service/UserService.java

@@ -189,7 +189,7 @@ public void updatePassword(User user, UserUpdatePasswordRequest req) {
     @Transactional
     public UserResponse updateBirth(User user, UserUpdateBirthRequest req) {
         validateActiveUser(user);
-        user.updateBirth(req.getBirth());
+        user.updateBirth(LocalDate.parse(req.getBirth()));
         userRepository.save(user);
         return UserResponse.from(user);
     }