Add RSpec GitHub annotations gem (#24040)

spec/spec_helper.rb

@@ -36,6 +36,12 @@ RSpec.configure do |config|
   config.after :suite do
     FileUtils.rm_rf(Dir[Rails.root.join('spec', 'test_files')])
   end
+
+  # Use the GitHub Annotations formatter for CI
+  if ENV['GITHUB_ACTIONS'] == 'true'
+    require 'rspec/github'
+    config.add_formatter RSpec::Github::Formatter
+  end
 end
 
 def body_as_json