[ADD] WorkflowStep edit 수정

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

@@ -38,7 +38,6 @@ public class WorkflowStepEntity {
     private String regUserId;
 
     @Schema(description = "생성 일시", example = "2025-09-11T10:00:00")
-    @Column(nullable = false)
     @CreatedDate
     private LocalDateTime regDt;
 

src/main/java/kr/re/etri/autoflow/service/WorkFlowService.java

@@ -43,7 +43,8 @@ public class WorkFlowService {
             WorkflowEntity existing = workflowRepository.findById(workflow.getId())
                     .orElseThrow(() -> new IllegalArgumentException("워크플로우가 존재하지 않습니다. id=" + workflow.getId()));
             Integer maxVersion = existing.getVersion();
-            workflow.setVersion(maxVersion != null ? maxVersion + 1 : 1);        }
+            workflow.setVersion(maxVersion != null ? maxVersion + 1 : 1);
+        }
         return workflowRepository.save(workflow);
     }