* Enable new Rails/* cops and use autocorrect on them
* Fixed Rails/PluckInWhere leftovers
* Fix Rails/DefaultScope
* Enable and fix Rails/PluckId
* Fix manual mistake with forcing autocorrection on Rails/PluckId
* Apply PR feedback to remove Rails/PluckId inline disables
* Apply PR feedback to get rid of Rails/PluckInWhere inline
The tests around `Podcasts::Feed` helped catch a bug around the
migration of the podcast episode creation delayed job where the sidekiq
version was passing a string version of item hash to
`Podcasts::CreateEpisode` which was in fact expecting the hash to
contain symbols.
