Merge branch 'spec-deprecations' into jamie

rswag-specs/spec/rswag/specs/swagger_formatter_spec.rb

@@ -11,6 +11,8 @@ module Rswag
       # Mock out some infrastructure
       before do
         allow(config).to receive(:swagger_root).and_return(swagger_root)
+
+        allow(ActiveSupport::Deprecation).to receive(:warn) # Silence deprecation output from specs
       end
       let(:config) { double('config') }
       let(:output) { double('output').as_null_object }