How to disable Yoast SEO adding article:author meta tags to pages

The excellent Yoast SEO plugin is adding some unwanted meta tags.

For example, I would like article:author to appear on posts, but not on pages or other content types.

Is there a way to adjust this globally?

I’m happy to edit functions.php, but I’m just unsure what I should be hooking in to.

I suspect the following will get me there, I just need to know what should replace xxxx.

function wpseo_show_article_author_only_on_posts() {
  if ( !is_single() ) {
    return false;
  }
}
add_filter( 'xxxxxx', 'wpseo_show_article_author_only_on_posts' );

Grateful for any pointers from those more familiar with the plugin.

https://wordpress.org/plugins/wordpress-seo/