Fix Rails/SaveBang Rubocop offenses for presenters

.rubocop_manual_todo.yml

@@ -388,9 +388,6 @@ Rails/SaveBang:
     - 'spec/models/user_status_spec.rb'
     - 'spec/models/wiki_page/meta_spec.rb'
     - 'spec/models/wiki_page_spec.rb'
-    - 'spec/presenters/ci/build_runner_presenter_spec.rb'
-    - 'spec/presenters/ci/trigger_presenter_spec.rb'
-    - 'spec/presenters/packages/conan/package_presenter_spec.rb'
     - 'spec/requests/api/ci/runner_spec.rb'
     - 'spec/requests/api/commit_statuses_spec.rb'
     - 'spec/requests/api/conan_packages_spec.rb'

spec/presenters/ci/build_runner_presenter_spec.rb

@@ -223,7 +223,7 @@ RSpec.describe Ci::BuildRunnerPresenter do
       let(:build) { create(:ci_build, ref: pipeline.ref, pipeline: pipeline) }
 
       before do
-        pipeline.persistent_ref.create
+        pipeline.persistent_ref.create # rubocop:disable Rails/SaveBang
       end
 
       it 'returns the correct refspecs' do
@@ -261,7 +261,7 @@ RSpec.describe Ci::BuildRunnerPresenter do
       let(:build) { create(:ci_build, pipeline: pipeline) }
 
       before do
-        pipeline.persistent_ref.create
+        pipeline.persistent_ref.create # rubocop:disable Rails/SaveBang
       end
 
       it 'exposes the persistent pipeline ref' do

spec/presenters/ci/trigger_presenter_spec.rb

@@ -35,7 +35,7 @@ RSpec.describe Ci::TriggerPresenter do
 
   context 'when user is a trigger owner and builds admin' do
     before do
-      trigger.update(owner: user)
+      trigger.update!(owner: user)
     end
 
     describe '#token' do

spec/presenters/packages/conan/package_presenter_spec.rb

@@ -146,7 +146,7 @@ RSpec.describe ::Packages::Conan::PackagePresenter do
         before do
           [info_file, manifest_file, package_file].each do |file|
             file.conan_file_metadatum.conan_package_reference = alternative_reference
-            file.save
+            file.save!
           end
         end