hotfix: 누락된 Enum값 추가

Author: marshmallowing

src/main/java/ita/tinybite/domain/notification/enums/NotificationType.java

@@ -24,6 +24,9 @@ public enum NotificationType {
 	PARTY_MEMBER_LEAVE,
 	PARTY_MANAGER_DELIVERY_REMINDER,
 
+	// 파티 참여 리마인드
+	PENDING_APPROVAL_REMINDER,
+
 	// 마케팅 알림
 	MARKETING_LOCAL_NEW_PARTY,
 	MARKETING_WEEKLY_POPULAR,

src/main/java/ita/tinybite/domain/notification/service/manager/PartyMessageManager.java

@@ -101,7 +101,7 @@ public NotificationMulticastRequest createPendingApprovalReminderRequest(List<St
 		Map<String, String> data = new HashMap<>();
 		data.put(KEY_PARTY_ID, String.valueOf(partyId));
 
-		data.put(KEY_EVENT_TYPE, "PENDING_APPROVAL_REMINDER");
+		data.put(KEY_EVENT_TYPE, NotificationType.PENDING_APPROVAL_REMINDER.name());
 
 		return requestConverter.toMulticastRequest(tokens, title, detail, data);
 	}