deps: Update Spectre.Console package

[filzrev]

This PR update Spectre.Console package version from 0.52.0 to 0.53.0

Spectre.Console 0.53.0 supports native CancellationToken support.
So I've added CancellationToken parameter to Execute method,
(Currently it's passed but it's not actually used. It'll be used when support docfx watch command)

Other Changes

• Remove CancellableCommandBase class because Spectre.Cli support build-in CancellationToken.
• Modify some commands base class from Command to AsyncCommand and remove .GetAwaiter().GetResult()
• Add RunAsync helper method to CommandHelper.cs
• Add code to handle SIGINT event on PdfBuilder.cs to keep exiting behavior.