fix spec

spec/jobs/send_submission_expired_webhook_request_job_spec.rb

@@ -13,6 +13,10 @@ RSpec.describe SendSubmissionExpiredWebhookRequestJob do
   end
 
   describe '#perform' do
+    around do |example|
+      freeze_time { example.run }
+    end
+
     before do
       stub_request(:post, webhook_url.url).to_return(status: 200)
     end