Fix deprecation warning on Rails 7

The way to change the current host changed on Rails 7.

See rails/rails#41388

[skip ci]

Gemfile-local

@@ -0,0 +1 @@
+gem "pry-byebug"

spec/spec_helper.rb

@@ -34,7 +34,12 @@
 
   if defined?(ActiveStorage::Current)
     config.before(:all) do
-      ActiveStorage::Current.host = 'https://www.example.com'
+      test_host = 'https://www.example.com'
+      if Rails.gem_version >= Gem::Version.new(7)
+        ActiveStorage::Current.url_options = { host: test_host }
+      else
+        ActiveStorage::Current.host = test_host
+      end
     end
   end