fix(bot): display new Discord usernames correctly

Myriad/Types/User.cs

@@ -23,6 +23,7 @@ public record User
     public ulong Id { get; init; }
     public string Username { get; init; }
     public string Discriminator { get; init; }
+    public string GlobalName { get; init; }
     public string? Avatar { get; init; }
     public bool Bot { get; init; }
     public bool? System { get; init; }