Fixes Unable to load application: NameError: uninitialized constant Sidekiq::JobLogger"}
when starting gitlab-puma service

Possibly because we have sidekiq 6.3.1 and upstream uses 6.2.2

--- a/lib/gitlab/sidekiq_logging/structured_logger.rb
+++ b/lib/gitlab/sidekiq_logging/structured_logger.rb
@@ -2,6 +2,7 @@
 
 require 'active_record'
 require 'active_record/log_subscriber'
+require 'sidekiq/job_logger'
 
 module Gitlab
   module SidekiqLogging