Format datetime as ISO8601 (#45)

IR-803

Author: Zawadidone

api_client/python/timesketch_api_client/search.py

@@ -1127,7 +1127,9 @@ def to_pandas(self):
 
         data_frame = pandas.DataFrame(return_list)
         try:
-            data_frame["datetime"] = pandas.to_datetime(data_frame.datetime, utc=True)
+            data_frame["datetime"] = pandas.to_datetime(
+                data_frame.datetime, utc=True, format="ISO8601", errors="coerce"
+            )
         except pandas.errors.OutOfBoundsDatetime:
             pass