nixpkgs

19bc92bc - imagemagick: 7.1.1-11 -> 7.1.1-12

imagemagick: 7.1.1-11 -> 7.1.1-12 Diff: https://github.com/ImageMagick/ImageMagick/compare/7.1.1-11...7.1.1-12 (cherry picked from commit e0334495f78fd862cbb6985b25b41dd197bb462c)