Change active storage variant processor back to mini_magick

Author: nygrenh

config/environments/production.rb

@@ -121,4 +121,5 @@
   config.hosts << URI.parse(SiteSetting.value('baseurl_for_remote_sandboxes')).host
 
   config.active_record.cache_versioning = false
-end
+  config.active_storage.variant_processor = :mini_magick
+end