hotfix: createdAt,updatedAt 날짜 정형화

Author: minwoo1999

infra/src/main/kotlin/org/yapp/infra/common/BaseTimeEntity.kt

@@ -13,12 +13,12 @@ import java.time.LocalDateTime
 abstract class BaseTimeEntity {
 
     @CreatedDate
-    @Column(name = "created_at", nullable = false, updatable = false)
+    @Column(name = "created_at", nullable = false, updatable = false, columnDefinition = "DATETIME(6)")
     var createdAt: LocalDateTime = LocalDateTime.now()
         protected set
 
     @LastModifiedDate
-    @Column(name = "updated_at", nullable = false)
+    @Column(name = "updated_at", nullable = false, columnDefinition = "DATETIME(6)")
     var updatedAt: LocalDateTime = LocalDateTime.now()
         protected set