fix: 정규식 개선

Author: lvalentine6

src/main/java/eatda/domain/member/Member.java

@@ -11,7 +11,6 @@
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
 import jakarta.persistence.Table;
-import java.time.LocalDateTime;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -22,7 +21,7 @@
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class Member extends AuditingEntity {
 
-    private static final String EMAIL_REGEX = "^[^@\\s]+@[^@\\s]+\\.[^@\\s]+$";
+    private static final String EMAIL_REGEX = "^[a-zA-Z0-9_+&*-]+(?:\\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,7}$";
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)