Update target todo test to use a public project

CHANGELOG

@@ -31,6 +31,9 @@ v 8.9.0 (unreleased)
   - Cache assigned issue and merge request counts in sidebar nav
   - Cache project build count in sidebar nav
 
+v 8.8.4
+  - Fix todos page throwing errors when you have a project pending deletion
+
 v 8.8.3
   - Fix 404 page when viewing TODOs that contain milestones or labels in different projects. !4312
   - Fixed JS error when trying to remove discussion form. !4303

spec/features/todos/target_state_spec.rb

@@ -3,7 +3,7 @@ require 'rails_helper'
 feature 'Todo target states', feature: true do
   let(:user)    { create(:user) }
   let(:author)  { create(:user) }
-  let(:project) { create(:project) }
+  let(:project) { create(:project, visibility_level: Gitlab::VisibilityLevel::PUBLIC) }
 
   before do
     login_as user