Merge pull request #5629 from solidusio/backport/v4.0/pr-5420

[v4.0] Skip `ActionCable` for dummy apps

Author: tvdeyen

core/lib/generators/spree/dummy/dummy_generator.rb

@@ -44,6 +44,7 @@ def generate_test_dummy
       opts[:skip_yarn] = true
       opts[:skip_bootsnap] = true
       opts[:skip_javascript] = true
+      opts[:skip_action_cable] = true
 
       puts "Generating dummy Rails application..."
       invoke Rails::Generators::AppGenerator,