Make 'Sidekiq::Testing.fake!' mode as default

Signed-off-by: Rémy Coutable <remy@rymai.me>

changelogs/unreleased/blackst0ne-make-sidekiq-testing-fake-default.yml

+---
+title: Make 'Sidekiq::Testing.fake!' mode as default
+merge_request: 31662
+author: "@blackst0ne"
+type: other

spec/controllers/projects/mirrors_controller_spec.rb

@@ -51,10 +51,6 @@ describe Projects::MirrorsController do
       sign_in(project.owner)
     end
 
-    around do |example|
-      Sidekiq::Testing.fake! { example.run }
-    end
-
     context 'With valid URL for a push' do
       let(:remote_mirror_attributes) do
         { "0" => { "enabled" => "0", url: 'https://updated.example.com' } }

spec/support/sidekiq.rb

 # frozen_string_literal: true
 
-require 'sidekiq/testing/inline'
+require 'sidekiq/testing'
 
 # If Sidekiq::Testing.inline! is used, SQL transactions done inside
 # Sidekiq worker are included in the SQL query limit (in a real