Dotnet version upgrade

Room/Messages/ChatMessage.cs

@@ -2,6 +2,7 @@
 
 public class ChatMessage
 {
+    public Guid Id { get; set; } = Guid.NewGuid();
     public string Sender { get; set; }
     public string Message { get; set; }
     

Room/Messages/EndMessage.cs

@@ -1,13 +1,13 @@
-namespace MauMau_Server.Room.Messages;
+using MauMau_Server.Websockets;
+
+namespace MauMau_Server.Room.Messages;
 
 public class EndMessage
 {
-    public Guid WinnerId { get; set; }
-    public string WinnerName { get; set; }
+    public ConnectionInstance Winner { get; set; }
     
-    public EndMessage(Guid winnerId, string winnerName)
+    public EndMessage(ConnectionInstance winner)
     {
-        WinnerId = winnerId;
-        WinnerName = winnerName;
+        Winner = winner;
     }
 }