fixes specs (unauthenticated users can view spending proposal show)

app/controllers/spending_proposals_controller.rb

@@ -1,7 +1,7 @@
 class SpendingProposalsController < ApplicationController
   include FeatureFlags
 
-  before_action :authenticate_user!, except: [:index]
+  before_action :authenticate_user!, except: [:index, :show]
   before_action -> { flash.now[:notice] = flash[:notice].html_safe if flash[:html_safe] && flash[:notice] }
 
   load_and_authorize_resource

spec/features/spending_proposals_spec.rb

@@ -178,9 +178,6 @@ feature 'Spending proposals' do
   end
 
   scenario "Show" do
-    user = create(:user)
-    login_as(user)
-
     spending_proposal = create(:spending_proposal,
                                 geozone: create(:geozone),
                                 association_name: 'People of the neighbourhood')