Update linode_api4/objects/monitor.py

Co-authored-by: Zhiwei Liang <121905282+zliang-akamai@users.noreply.github.com>

Author: srbhaakamai

linode_api4/objects/monitor.py

@@ -346,7 +346,7 @@ class AlertDefinition(DerivedBase):
         "status": Property(mutable=True),
         "has_more_resources": Property(mutable=True),
         "rule_criteria": Property(mutable=True),
-        "trigger_conditions": Property(mutable=True),
+        "trigger_conditions": Property(mutable=True, json_object=TriggerConditions),
         "alert_channels": Property(mutable=True),
         "created": Property(is_datetime=True),
         "updated": Property(is_datetime=True),