Merge pull request rails#43631 from ytnk531/patch-1

Add actioncable.js and actioncable.esm.js to gem package.

Author: kamipo

actioncable/actioncable.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.email    = ["[email protected]", "[email protected]"]
   s.homepage = "https://rubyonrails.org"
 
-  s.files        = Dir["CHANGELOG.md", "MIT-LICENSE", "README.md", "lib/**/*", "app/assets/javascripts/action_cable.js"]
+  s.files        = Dir["CHANGELOG.md", "MIT-LICENSE", "README.md", "lib/**/*", "app/assets/javascripts/*.js"]
   s.require_path = "lib"
 
   s.metadata = {