Deprecation: Ignore --skip-package-validation option for app-store-connect publish

[priitlatt]

Oftentimes, when submitting application package to App Store Connect via app-store-connect publish, the package validation command, which is invoked by running

xcrun altool --validate-app --file /path/to/app.ipa ...

fails due to

• Apple services being unavailable,
• Apple is not capable of validating the package because of "Unable to process app at this time due to a general error",
• vague authentication failure.

And all this happens despite the fact that actually the very same binary can be uploaded just fine in case validation is disabled.

In order to avoid such false alarms about validation failures, disable package validation by default (previously it was enabled by default), and leave option to turn in on by using a CLI option --enable-package-validation.

Updated actions:

• app-store-connect publish

Notable changes:

• Deprecate --skip-package-validation option for app-store-connect publish.
• App new option --enable-package-validation option for `app-store-connect publish.
• Show a deprecation warning in case --skip-package-validation was used.