MGASA-2021-0013 Updated imagemagick packages fix security vulnerabilities

The imagemagick package has been updated to version 7.0.10-55, fixing several security issues. The abydos, converseen, libopenshot, mgba, pfstools, php-imagick, sk1, synfig, transcode, uniconvertor, and xine-lib1.2 packages have been rebuilt against the updated libmagick library...