Update to Telegram Bot Framework 2.0

modules/ChatManagement/Handler/Greet.cs

@@ -21,7 +21,8 @@ public class Greet : BotEventHandler
         _rulesService = rulesService;
     }
 
-    [Message(InChat.Public, MessageFlag.HasNewChatMembers)]
+    [InChat(InChat.Public)]
+    [Message(MessageFlag.HasNewChatMembers)]
     public async Task HandleNewChatMembers()
     {
         var message = RawUpdate.Message!;