ci: test ruby and rails latest (#478)

Author: seuros

.github/workflows/ci.yml

@@ -52,10 +52,12 @@ jobs:
       matrix:
         ruby:
           - '3.4'
+          - '4.0'
         rails:
           - '7.2'
           - '8.0'
           - '8.1.1'
+          - 'edge'
 
     steps:
       - name: Checkout

Gemfile

@@ -8,8 +8,13 @@ gem 'dotenv'
 gem 'with_advisory_lock', '>= 7'
 
 rails_version = ENV['RAILS_VERSION'] || '8.0'
-gem 'activerecord', "~> #{rails_version}"
-gem 'railties', "~> #{rails_version}"
+if rails_version == 'edge'
+  gem 'activerecord', github: 'rails/rails'
+  gem 'railties', github: 'rails/rails'
+else
+  gem 'activerecord', "~> #{rails_version}"
+  gem 'railties', "~> #{rails_version}"
+end
 
 platforms :mri, :truffleruby do
   # Database adapters