Fix CI (as it installs RuboCop 1.45.1 and fails) (#1686)

Gemfile

@@ -18,6 +18,7 @@ group :benchmark, :test do
 end
 
 group :test do
+  gem 'rubocop', '~> 1.44.0'
   gem 'rubocop-shopify', '~> 2.7.0', require: false
   gem 'rubocop-performance', require: false
 

performance/shopify/database.rb

@@ -49,8 +49,3 @@ module Database
     end
   end
 end
-
-if __FILE__ == $PROGRAM_NAME
-  p(Database.tables['collections']['frontpage'].keys)
-  # p Database.tables['blog']['articles']
-end