.htaccess housekeeping

As some general protection for WordPress sites hosted with me, or with HeartInternet, adding the following code to the top of your .htaccess file should help reduce the chances of your wordpress site being hacked.

# Update PHP to version 7.3
AddHandler application/x-httpd-php73 .php

# Block WordPress xmlrpc.php requests
<Files xmlrpc.php>
order deny,allow
deny from all