Is it possible to not require the image_processing gem?

[littleforest]

I was going to see if it made sense to not require this here, and then the Rails app that is using Administrate would require it instead? So then if you are using Administrate but not ActionTest/ActiveStorage you won't be unnecessarily requiring this. Would that work?

Originally posted by @littleforest in https://github.com/thoughtbot/administrate/pull/2411#discussion_r1627970990