package/php: security bump version to 7.3.11
Changelog: http://www.php.net/ChangeLog-7.php#7.3.11
Fixes CVE-2019-11043: https://bugs.php.net/bug.php?id=78599
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>