feat: 알림 재예약 개선과 패키지 업그레이드

lib/widgets/category_header_widget.dart

@@ -15,14 +15,14 @@ class CategoryHeaderWidget extends StatelessWidget {
   final double totalCostCNY;
 
   const CategoryHeaderWidget({
-    Key? key,
+    super.key,
     required this.categoryName,
     required this.subscriptionCount,
     required this.totalCostUSD,
     required this.totalCostKRW,
     required this.totalCostJPY,
     required this.totalCostCNY,
-  }) : super(key: key);
+  });
 
   @override
   Widget build(BuildContext context) {