Remove Author link from Post in Astra.

functions.php

<?php 

/**
* Disable Author Archive link from Post Meta.
*/
add_filter( 'astra_post_author', 'your_author_meta_update' );

function your_author_meta_update( $output ){
		
	$author_info = sprintf(
		esc_html( '%s' ),
		'<a class="url fn n" title="View all posts by ' . esc_attr( get_the_author() ) . '"  rel="author" itemprop="url"> <span class="author-name" itemprop="name">' . esc_html( get_the_author() ) . '</span> </a>'
	);

	$output = '<span class="posted-by vcard author" itemtype="https://schema.org/Person" itemscope="itemscope" itemprop="author"> ' . $author_info . '</span>';
	return $output;
}