* Remove deprecated options from environments
* Remove deprecation warnings for upcoming Rails 7.2
* Dump schema with new defaults
* Remove outdated (and erroneous) data attribute in view
* Resolve a `NoMethodError` for seeds_spec.rb
Since both projects are developed together and by the same team, we also want to have the same code structure and utility methods available in both projects. Therefore, this commit changes many files, but without a functional change.
