[ADD] WorkflowStep edit 수정

src/main/java/kr/re/etri/autoflow/entity/WorkflowStepEntity.java

@@ -5,6 +5,7 @@ import jakarta.persistence.*;
 import lombok.*;
 import org.hibernate.annotations.Comment;
 import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
 
 import java.time.LocalDateTime;
 import java.util.ArrayList;
@@ -16,6 +17,7 @@ import java.util.List;
 @Setter
 @NoArgsConstructor
 @AllArgsConstructor
+@EntityListeners(AuditingEntityListener.class)
 @Builder
 @Schema(description = "워크플로우 스텝 엔티티")
 public class WorkflowStepEntity {