capybara.yml in rubocop-govuk-4.18.0

- old
+ new

@@ -1,5 +1,6 @@
 # Within GOV.UK we use Capybara test method syntax of feature,
-# scenario. We don't want this outside of feature specs though.
+# scenario. We don't want this outside of feature or system specs though.
 RSpec/Capybara/FeatureMethods:
   Exclude:
     - 'spec/features/**/*.rb'
+    - 'spec/system/**/*.rb'