Rails 7 support

[spencersteiner]

Rails 7 depends on activemodel 7.0.0, and active interaction requires activemodel (>= 5, < 7).

Here's the bundler output when upgrading rails with active interaction installed:

Bundler could not find compatible versions for gem "activemodel":
  In Gemfile:
    active_interaction (~> 4.0) was resolved to 4.0.6, which depends on
      activemodel (>= 5, < 7)

    rails (= 7.0.0) was resolved to 7.0.0, which depends on
      activemodel (= 7.0.0)

[AaronLasseigne]

closed by #519