Allow Ransack 4.2 again

Now that we removed the broken ransacker in previous commit,
we can allow Ransack v4.2 - with Rails 7.2 support - again.

core/solidus_core.gemspec

@@ -43,9 +43,7 @@ Gem::Specification.new do |s|
  s.add_dependency 'monetize', '~> 1.8'
  s.add_dependency 'kt-paperclip', ['>= 6.3', '< 8']
  s.add_dependency 'psych', ['>= 4.0.1', '< 6.0']
- # @note ransack 4.2 contains a bug which has not yet been addressed.
- # @see https://github.com/activerecord-hackery/ransack/pull/1468
- s.add_dependency 'ransack', ['~> 4.0', '< 4.2']
+ s.add_dependency 'ransack', ['~> 4.0', '< 5']
  s.add_dependency 'sprockets-rails', '!= 3.5.0'
  s.add_dependency 'state_machines-activerecord', '~> 0.6'
  s.add_dependency 'omnes', '~> 0.2.2'