Fix deprecations after rails upgrade

Author: Vidas P

app/controllers/agents_controller.rb

@@ -43,7 +43,8 @@ def table
         last_message_at: agent.last_message_at&.to_time&.to_i,
         issues: agent.issues?,
         receivers: agent.receivers.map { |receiver| { id: receiver.id } },
-        action_menu: AgentsController.render(template: 'agents/_action_menu.html',
+        action_menu: AgentsController.render(template: 'agents/_action_menu',
+                                             formats: [:html],
                                              layout: false,
                                              locals: {
                                                right: true, agent: agent,

spec/rails_helper.rb

@@ -34,6 +34,7 @@
 
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
   config.fixture_path = "#{::Rails.root}/spec/fixtures"
+  config.file_fixture_path = "#{::Rails.root}/spec/fixtures"
 
   # If you're not using ActiveRecord, or you'd prefer not to run each of your
   # examples within a transaction, remove the following line or assign false