Use archived trait for project in specs instead model column

spec/features/admin/admin_projects_spec.rb

@@ -10,7 +10,7 @@ describe "Admin::Projects", feature: true  do
   end
 
   describe "GET /admin/projects" do
-    let!(:archived_project) { create :project, :public, archived: true }
+    let!(:archived_project) { create :project, :public, :archived }
 
     before do
       visit admin_projects_path

spec/features/groups/merge_requests_spec.rb

@@ -7,7 +7,7 @@ feature 'Group merge requests page', feature: true do
   include_examples 'project features apply to issuables', MergeRequest
 
   context 'archived issuable' do
-    let(:project_archived) { create(:project, group: group, merge_requests_access_level: ProjectFeature::ENABLED, archived: true) }
+    let(:project_archived) { create(:project, :archived, group: group, merge_requests_access_level: ProjectFeature::ENABLED) }
     let(:issuable_archived) { create(:merge_request, source_project: project_archived, target_project: project_archived, title: 'issuable of an archived project') }
     let(:access_level) { ProjectFeature::ENABLED }
     let(:user) { user_in_group }

spec/finders/merge_requests_finder_spec.rb

@@ -6,7 +6,7 @@ describe MergeRequestsFinder do
 
   let(:project1) { create(:project) }
   let(:project2) { create(:project, forked_from_project: project1) }
-  let(:project3) { create(:project, forked_from_project: project1, archived: true) }
+  let(:project3) { create(:project, :archived, forked_from_project: project1) }
 
   let!(:merge_request1) { create(:merge_request, :simple, author: user, source_project: project2, target_project: project1) }
   let!(:merge_request2) { create(:merge_request, :simple, author: user, source_project: project2, target_project: project1, state: 'closed') }

spec/finders/move_to_project_finder_spec.rb

@@ -36,7 +36,7 @@ describe MoveToProjectFinder do
 
       it 'does not return archived projects' do
         reporter_project.team << [user, :reporter]
-        reporter_project.update_attributes(archived: true)
+        reporter_project.archive!
         other_reporter_project = create(:empty_project)
         other_reporter_project.team << [user, :reporter]