disposes the cancellation token source

Ensures the cancellation token source is properly disposed of after cancellation.

Prevents potential resource leaks by explicitly disposing of the CancellationTokenSource after the Console.CancelKeyPress event is triggered.

Author: arturcic

new-cli/GitVersion.Cli/Program.cs

@@ -12,7 +12,11 @@
 };
 
 var cts = new CancellationTokenSource();
-Console.CancelKeyPress += (_, _) => cts.Cancel();
+Console.CancelKeyPress += (_, _) =>
+{
+    cts.Cancel();
+    cts.Dispose();
+};
 
 await using var serviceProvider = RegisterModules(modules);
 var app = serviceProvider.GetRequiredService<ICliApp>();