Electro v2 - Enqueue latest fontawesome from CDN

functions.php

add_action( 'wp_enqueue_scripts', 'ec_enqueue_latest_fa', 30 );
add_filter( 'style_loader_tag', 'ec_child_add_fa_cdn_attributes', 10, 2 );

function ec_enqueue_latest_fa() {
    wp_dequeue_style( 'fontawesome' );
    wp_dequeue_style( 'ec-fontawesome' );
    wp_enqueue_style( 'latest-fontawesome', 'https://use.fontawesome.com/releases/v5.7.2/css/all.css', array(), null );
}

function ec_child_add_fa_cdn_attributes( $html, $handle ) {
    if ( 'latest-fontawesome' === $handle ) {
        return str_replace( "media='all'", "media='all' integrity='sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr' crossorigin='anonymous'", $html );
    }
    return $html;
}