Make last checked at time timezone aware

app/models/delayed_job_models.py

@@ -218,7 +218,8 @@ class DelayedJob(DB.Model):
         lsf_script_errored = self.last_lsf_check_status != 0
         death_assumption_seconds = RUN_CONFIG.get('status_agent').get('death_assumption_seconds')
         checker_assumed_dead_time = app_utils.get_utc_now() - datetime.timedelta(seconds=death_assumption_seconds)
-        checker_is_assumed_dead = self.last_lsf_checked_at < checker_assumed_dead_time
+        checker_is_assumed_dead = self.last_lsf_checked_at.replace(
+            tzinfo=datetime.timezone.utc) < checker_assumed_dead_time
 
         return lsf_script_errored and checker_is_assumed_dead