Print immutable action package details in set up job logs

[heavymachinery]

Soon the server will begin to respond with additional details about the package when an immutable action is downloaded. If the package details are available, we want to print them in the Set up job logs so it is clear when a workflow run used an immutable action.

Related internal tracking issue

[thyeggman]

Here's a more concise way to write this method:

Suggested change

	private static ActionDownloadPackageDetails? ToServerData(ActionDownloadPackageDetailsResponse? actionDownloadPackageDetails)
	{
	if (actionDownloadPackageDetails == null)
	{
	return null;
	}
	return new ActionDownloadPackageDetails
	{
	Version = actionDownloadPackageDetails.Version,
	ManifestDigest = actionDownloadPackageDetails.ManifestDigest
	};
	}
	private static ActionDownloadPackageDetails? ToServerData(ActionDownloadPackageDetailsResponse? actionDownloadPackageDetails) =>
	actionDownloadPackageDetails == null ? null : new ActionDownloadPackageDetails
	{
	Version = actionDownloadPackageDetails.Version,
	ManifestDigest = actionDownloadPackageDetails.ManifestDigest
	};