Use backwards compatible range notation for Delayed Jobs' run_at

Author: mrrooijen

lib/hirefire/macro/delayed_job.rb

@@ -30,7 +30,7 @@ def job_queue_latency(*queues)
 
           query =
             ::Delayed::Job
-              .where(run_at: ..Time.now)
+              .where("run_at <= ?", Time.now)
               .where(failed_at: nil)
               .order(run_at: :asc)
 
@@ -68,7 +68,7 @@ def job_queue_size(*queues)
 
           query =
             ::Delayed::Job
-              .where(run_at: ..Time.now)
+              .where("run_at <= ?", Time.now)
               .where(failed_at: nil)
 
           if queues.any?