validator-generated.php seems to be incomplete

[mxhCodes]

The specification is either out of date or incomplete. Example: amp-accordion has the attribute disable-session-states specified.

https://www.ampproject.org/docs/reference/components/amp-accordion

When using this attribute with this library, the validator will filter it out as it's not included as a specified attribute in validator-generated.php

Please check if you need to rebuild this file or whether the canonical validator itself might miss this specification.

[marcelovani]

The validator needs update, see #231