Use wait_for_ajax instead of wait_for_requests

spec/features/issues/form_spec.rb

@@ -63,7 +63,7 @@ describe 'New/edit issue', feature: true, js: true do
 
         click_button 'Unassigned'
 
-        wait_for_requests
+        wait_for_ajax
       end
 
       it 'should display selected users even if they are not part of the original API call' do

spec/features/issues/issue_sidebar_spec.rb

@@ -61,7 +61,7 @@ feature 'Issue Sidebar', feature: true do
     it 'keeps your filtered term after filtering and dismissing the dropdown' do
       find('.dropdown-input-field').native.send_keys user2.name
 
-      wait_for_requests
+      wait_for_ajax
 
       page.within '.dropdown-menu-user' do
         expect(page).not_to have_content 'Unassigned'