Change selector in tests

ee/app/assets/javascripts/ci_minutes_usage/components/minutes_usage_project_chart.vue

@@ -84,6 +84,7 @@ export default {
           :key="index"
           :is-checked="selectedMonth === month"
           is-check-item
+          data-testid="month-dropdown-item"
           @click="changeSelectedMonth(month)"
         >
           {{ month }}

ee/spec/features/ci/ci_minutes_spec.rb

@@ -26,7 +26,7 @@ RSpec.describe 'CI minutes', :js do
     page.find('[data-testid="project-month-dropdown"]').click
 
     page.within '[data-testid="project-month-dropdown"]' do
-      expect(page.all('.gl-new-dropdown-item').size).to eq 2
+      expect(page.all('[data-testid="month-dropdown-item"]').size).to eq 2
     end
   end
 end