Apply backend maintainer suggestions

spec/models/personal_access_token_spec.rb

@@ -35,11 +35,12 @@ RSpec.describe PersonalAccessToken do
     describe '.owner_is_human' do
       let_it_be(:user) { create(:user, :project_bot) }
       let_it_be(:project_member) { create(:project_member, user: user) }
+      let_it_be(:personal_access_token) { create(:personal_access_token) }
       let_it_be(:project_access_token) { create(:personal_access_token, user: user) }
 
       subject { described_class.owner_is_human }
 
-      it { is_expected.not_to include(project_access_token) }
+      it { is_expected.to contain_exactly(personal_access_token) }
     end
 
     describe '.for_user' do