Fix Pyright error 'key' is not a known attribute of 'None'.

Author: jonathan-cantu-icf

ops/services/02-eft/lambda_src/sftp_outbound_transfer/sftp_outbound_transfer.py

@@ -338,6 +338,11 @@ def handler(event: dict[Any, Any], context: LambdaContext) -> None:  # noqa: ARG
             raise ValueError("Invalid invocation event, no records")
 
         for s3_record in s3_event_records:
+            
+            if not (s3_data := s3_record.s3) or not (s3_object := s3_data.object):
+                logger.error("Skipping record: 's3.object' data is missing or None")
+                continue
+
             s3_event_time = s3_record.eventTime.astimezone(UTC)
             s3_object_key = unquote_plus(s3_record.s3.object.key)
             s3_event_name = s3_record.eventName