build: (deps): bump flutter_local_notifications from 19.5.0 to 20.0.0

Bumps [flutter_local_notifications](https://github.com/MaikuB/flutter_local_notifications) from 19.5.0 to 20.0.0.
- [Release notes](https://github.com/MaikuB/flutter_local_notifications/releases)
- [Commits](https://github.com/MaikuB/flutter_local_notifications/compare/flutter_local_notifications-v19.5.0...flutter_local_notifications-v20.0.0)

---
updated-dependencies:
- dependency-name: flutter_local_notifications
  dependency-version: 20.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

lib/utils/push_helper.dart

@@ -41,11 +41,11 @@ Future<void> pushHelper(
     Logs().e('Push Helper has crashed! Writing into temporary file', e, s);
 
     l10n ??= await lookupL10n(PlatformDispatcher.instance.locale);
-    flutterLocalNotificationsPlugin.show(
-      notification.roomId?.hashCode ?? 0,
-      l10n.newMessageInFluffyChat,
-      l10n.openAppToReadMessages,
-      NotificationDetails(
+    await flutterLocalNotificationsPlugin.show(
+      id: notification.roomId?.hashCode ?? 0,
+      title: l10n.newMessageInFluffyChat,
+      body: l10n.openAppToReadMessages,
+      notificationDetails: NotificationDetails(
         iOS: const DarwinNotificationDetails(),
         android: AndroidNotificationDetails(
           AppConfig.pushNotificationsChannelId,
@@ -111,7 +111,7 @@ Future<void> _tryPushHelper(
           (room) => room.id.hashCode == activeNotification.id,
         );
         if (room == null || !room.isUnreadOrInvited) {
-          flutterLocalNotificationsPlugin.cancel(activeNotification.id!);
+          flutterLocalNotificationsPlugin.cancel(id: activeNotification.id!);
         }
       }
     }
@@ -220,7 +220,7 @@ Future<void> _tryPushHelper(
 
   final messagingStyleInformation = PlatformInfos.isAndroid
       ? await AndroidFlutterLocalNotificationsPlugin()
-            .getActiveNotificationMessagingStyle(id)
+            .getActiveNotificationMessagingStyle(id: id)
       : null;
   messagingStyleInformation?.messages?.add(newMessage);
 
@@ -317,10 +317,10 @@ Future<void> _tryPushHelper(
   }
 
   await flutterLocalNotificationsPlugin.show(
-    id,
-    title,
-    body,
-    platformChannelSpecifics,
+    id: id,
+    title: title,
+    body: body,
+    notificationDetails: platformChannelSpecifics,
     payload: FluffyChatPushPayload(
       client.clientName,
       event.room.id,