package/imagemagick: security bump to version 7.0.7-10
Version 7.0.7-3 fixes CVE-2017-15218:
Stop potential leaks in the JNG decoder
Changelog: https://www.imagemagick.org/script/changelog.php
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>