PHP Warning with PHP7.3

[ldidry]

I recently upgraded my server to Debian Buster and now I have this warning from my cron php -q wp-cron.php:

PHP Warning:  "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"? in /var/www/blog/wp-content/plugins/wp-markdown/markdownify/markdownify.php on line 299