14299 change webhook timestamp to isoformat (#14331)

* 14299 change timestamp to isoformat

* Omit redundant str() casting

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/core/models/jobs.py

@@ -229,7 +229,7 @@ class Job(models.Model):
                 model_name=self.object_type.model,
                 event=event,
                 data=self.data,
-                timestamp=str(timezone.now()),
+                timestamp=timezone.now().isoformat(),
                 username=self.user.username,
                 retry=get_rq_retry()
             )

netbox/extras/webhooks.py

@@ -115,7 +115,7 @@ def flush_webhooks(queue):
                 event=data['event'],
                 data=data['data'],
                 snapshots=data['snapshots'],
-                timestamp=str(timezone.now()),
+                timestamp=timezone.now().isoformat(),
                 username=data['username'],
                 request_id=data['request_id'],
                 retry=get_rq_retry()