Mute deliberate deprecation

    RuntimeError:
       Warnings were generated: /home/runner/work/rspec-rails/rspec-rails/lib/rspec/rails/matchers/have_http_status.rb:219: warning: Status code :unprocessable_entity is deprecated and will be removed in a future version of Rack. Please use :unprocessable_content instead.

Author: pirj

spec/rspec/rails/matchers/have_http_status_spec.rb

@@ -502,6 +502,7 @@ def create_response(opts = {})
 
   context 'with deprecated rack status codes' do
     it 'supports the original names' do
+      allow(Rack::Utils).to receive(:warn).with(/unprocessable_entity is deprecated/, anything)
       expect(create_response(status: 422)).to have_http_status(:unprocessable_entity)
     end
   end