add test scenario to make sure deprecated warning is triggered

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Set up Ruby ${{ matrix.ruby-version }}
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0
+          ruby-version: 2.7
       - name: Install dependencies
         run: bundle install
       - name: Run tests

.github/workflows/gem-push.yml

@@ -13,10 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Ruby 3.0
+    - name: Set up Ruby 2.7
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.0
+        ruby-version: 2.7
 
     - name: Publish to RubyGems
       env:

lib/jit_preloader/preloader.rb

@@ -2,7 +2,7 @@ module JitPreloader
   class Preloader < ActiveRecord::Associations::Preloader
 
     attr_accessor :records
-
+    
     if Gem::Version.new(ActiveRecord::VERSION::STRING) >= Gem::Version.new("7.0.0")
       def self.attach(records)
         new(records: records.dup, associations: nil).tap do |loader|