Upgrade to Rails 7.1

[jvendetti]

@alexskr requested an update to Rails 7.1 because it contains a fix he'd like to have: rails/rails@915776a

Upgrade guide: https://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-7-0-to-rails-7-1

If possible, it would be nice to have this completed before the OntoPortal Workshop (Sept. 23-25, 2024).