Converts timestamps to strings before passing them to the document pl…

…ugin (Netflix#3053) (#35)

Co-authored-by: Marc Vilanova <39573146+mvilanova@users.noreply.github.com>

src/dispatch/incident/flows.py

@@ -493,8 +493,8 @@ def update_document(document_resource_id: str, incident: Incident, db_session: S
         ticket_weblink=resolve_attr(incident, "ticket.weblink"),
         title=incident.title,
         type=incident.incident_type.name,
-        stable_at_time=incident.stable_at,
-        reported_at_time=incident.reported_at,
+        reported_at_time=incident.reported_at.strftime("%m/%d/%Y %H:%M:%S"),
+        stable_at_time=incident.stable_at.strftime("%m/%d/%Y %H:%M:%S"),
     )