Upgrade our apps to rails 7.2

[AgaDufrat]

How

https://guides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-7-1-to-rails-7-2

• Run rails app:update command and review changes
• Use 7.2 defaults

Tasks

Beta Give feedback

1. Content Data Admin
2. Content Data API
3. Release
4. Support
5. Support API

Suggested steps we followed for Rails 7.0 upgrades

1. Update Rails version

• Run rails app:update and accept all changes (press a).
• Run rubocop -A to auto-fix any stylistic differences between the Rails defaults and our linter rules.
• Review in git and keep/discard changes as appropriate.
• Try to retain any config values that seem to have been set for a reason, while keeping new values that replace old defaults. Git blame is helpful here – for example to determine if particular lines were set for a reason, or if they haven’t been touched since the codebase was first generated.
• Run the test suite to make sure it still passes – ignore deprecation notices, we'll fix them in the next step.
• Commit changes: git commit -am "Run rails app:update"

2. Fix deprecation notices

• Run the test suite and look out for deprecation notices shown in the console.
• Fix all deprecations. Note that some deprecations may come from other GOV.UK gems, which will need to be resolved in a separate piece of work. It's worth taking a note of them, though, as they can be turned into Trello cards.
• Commit changes: git commit -am "Fix deprecation notices"