fix italian message

Bump actions/checkout from 4 to 5

Add bundled gems to Rails 6.1 and 7.0 test dependencies

Fix broken CI caused by dependency conflict between Rails and concurrent-ruby

Add Rails 8.0 routes lazy loading workaround

Test against Ruby 3.4 and Rails 8.0

bump to 2.0.11

Small refactoring

Fix invitation_due_at

update changelog

fix gemspec

bump to 2.0.10

skip jruby-9.4 with rails > 7.0 with AR, not ready yet

fix active record testing

skip ruby head with rails 7.0