Test with Ruby 3.1 in CI

[mvz]

No description provided.

[cloudsbird]

Hi Bro I see you want to test the app with Ruby 3.1

but some people have test the rails first with 3.1 and leads to some error.
Because we depends on Rails 7 (active_record 7.0) better we wait until they fix this error.
Before we test in Ruby 3.1

here is my reference
https://gist.github.com/claudiug/bdc2fb70b10d19513208c816588aed92

[mvz]

Thanks @cloudsbird, I've seen that error in the tests for another gem I maintain: https://github.com/mvz/non-digest-assets/runs/4639998453?check_suite_focus=true#step:6:18. It's good to know that's a problem others are seeing too.

In acts as paranoid, the error is different: https://github.com/ActsAsParanoid/acts_as_paranoid/runs/4639915973?check_suite_focus=true#step:8:8.

I haven't looked into this error yet. In any case, this PR won't get merged until it's green.