Try to avoid poltergeist error on hover

spec/features/budgets/ballots_spec.rb

@@ -517,7 +517,7 @@ feature 'Ballots' do
       add_to_ballot(bi1)
 
       within("#budget_investment_#{bi2.id}") do
-        find("div.ballot").hover
+        find("div.ballot").trigger("mouseover")
         expect(page).to have_content('Price is higher than the available amount left')
         expect(page).to have_selector('.in-favor a', visible: false)
       end
@@ -594,4 +594,4 @@ feature 'Ballots' do
       end
     end
   end
-end
+end