Rails 7.1 seems to drop this dependancy, but we rely on it for [this line](https://github.com/bullet-train-co/jbuilder-schema/blob/b085431c77784b5fd6ac3f8a8a9087eef2a508f6/lib/jbuilder/schema/template.rb#L267) to work. Need to find another way of getting the source of `Proc`.
Rails 7.1 seems to drop this dependancy, but we rely on it for this line to work. Need to find another way of getting the source of
Proc.