Merge branch 'blackst0ne-replace-sidekiq-inline-with-perform-enqueued-jobs' into 'master'

Replace 'Sidekiq::Testing.inline!' with 'perform_enqueued_jobs'

Closes #22991

See merge request gitlab-org/gitlab-ce!20768

spec/services/users/destroy_service_spec.rb

@@ -173,7 +173,7 @@ describe Users::DestroyService do
     describe "user personal's repository removal" do
       before do
-        Sidekiq::Testing.inline! { service.execute(user) }
+        perform_enqueued_jobs { service.execute(user) }
       end
       context 'legacy storage' do

spec/workers/storage_migrator_worker_spec.rb

@@ -13,7 +13,7 @@ describe StorageMigratorWorker do
     end
     it 'migrates projects in the specified range' do
-      Sidekiq::Testing.inline! do
+      perform_enqueued_jobs do
         worker.perform(ids.min, ids.max)
       end