Update imagemagick to use latest tag, apply patch for gif issue and add mimemap to prevent errors.

composer.json

@@ -59,7 +59,7 @@
         "drupal/imageapi_optimize": "2.0-alpha4",
         "drupal/imageapi_optimize_binaries": "1.0-alpha1",
         "drupal/imageapi_optimize_resmushit": "1.0-beta1",
-        "drupal/imagemagick": "8.x-2.0-beta1-uw_wcms-dev",
+        "drupal/imagemagick": "2.6",
         "drupal/imce": "1.7",
         "drupal/inline_entity_form": "1.0-rc2",
         "drupal/label_help": "dev-8.x-1.x",
@@ -89,6 +89,7 @@
         "drupal/workbench": "1.1",
         "drupal/workbench_access": "1.0-beta2",
         "fourkitchens/emulsify": "dev-master#v3.1",
+        "fileeye/mimemap": "^1.1",
         "hirak/prestissimo": "0.3.9",
         "jcalderonzumba/gastonjs": "v1.2.0",
         "jcalderonzumba/mink-phantomjs-driver": "v0.3.3",
@@ -148,6 +149,9 @@
             },
             "drupal/eck": {
                 "After 8.7.x core update install profile with ECK config has fatal errors on install": "https://www.drupal.org/files/issues/2019-07-17/%203055007-8-after-8.7-core-update-fatal-errors-on-install-profile-install.patch"
+            },
+            "drupal/imagemagick": {
+                "ImageMagick scale breaks animated gifs":"https://www.drupal.org/files/issues/imagemagick-resize_animated_gifs-1802534-31.patch"
             }
         }
     }