Ruby 3.1.2
core: TranslationHelper, SiteBarHelper - using Ruby3 keyword args
      lib/refinery/engine uses new mobility configuration
images, resources: Updated examples to pass an explicit block to 'expect' as passing an implicit block is deprecated.
images: Use errors.add to add errors to an object - had already been done for resources.

Gem versions changed:
  mobility 1.2.9
  rspec-rails 6.0.0.rc1
  friendly_id >= 5.4.0
  friendly_id-mobility ~> 1.0.3

…rogress

…ms-i18n in Gemfile'

…e and Directory matchers.

Tidy up configuration block for Mobility 1.2.9
Revert some changes for single argument keyword args
Add descriptions for Generator spec matchers (thereby avoiding a very long message when there are no descriptions).