Add support for Rails 7.2

[JanekNaymspace]

The newer versions contain

gem.add_dependency 'activerecord', '>= 5.2', '< 7.1'

inside gemspec file. With Rails 7.2 those versions are not installable because of this restriction.

Could you please add a Rails 7.2 support?

[rvila]

Have you tried forking and changing the dependency? Do it allows you to use the gem without issues? I'm upgrading an app from Rails 6.1 to 7.2 and facing the same probolem.

[urkle]

@rvila there is work that needs to be done on some of the core gems due to changes in ActiveRecord for rails 7.2. I'll review PRs if you submit some. Start with schema_dev and schema_plus_core then we should be able to bump validations

[JanekNaymspace]

There is already one: #72