WordPress auto updates for specific plugins and themes

wp-specific-auto-updates.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
  exit; // Exit if accessed directly
}

function auto_update_specific_plugins( $update, $item ) {
  // Array of plugin slugs to always auto-update
  $plugins = array(
    'dummy-plugin',
  );

  if ( in_array( $item->slug, $plugins, true ) ) {

    return true;
  } else {

    return $update;
  }
}
add_filter( 'auto_update_plugin', 'auto_update_specific_plugins', 10, 2 );

function auto_update_specific_themes( $update, $item ) {
  // Array of theme slugs to always auto-update
  $themes = array(
    'dummy-theme',
  );

  if ( in_array( $item->slug, $theme, true ) ) {

    return true;
  } else {

    return $update;
  }
}
add_filter( 'auto_update_theme', 'auto_update_specific_themes', 10, 2 );