community/imagemagick: upgrade to 7.1.1.21
7.1.1-19...7.1.1-21 -> lgtm
Changes
7.1.1-21
What's Changed
Define quantum depth for PerlMagick on windows by @hakonhagland in #6770
Add the up to date "Artifex" name to Ghostscript list by @chris-liddell in #6779
honor pkg-config when searching for libjpeg by @mmomtchev in #6784
honor pkg-config when searching for bzip2 by @mmomtchev in #6785
Edited by Krassy Boykinov