Fix bug #1656 (#1657)

Co-authored-by: FrancescoIngv <FrancescoIngv@users.noreply.github.com>

pygeoapi/process/manager/dummy.py

@@ -72,6 +72,7 @@ def execute_process(
             process_id: str,
             data_dict: dict,
             execution_mode: Optional[RequestedProcessExecutionMode] = None,
+            requested_outputs: Optional[dict] = None,
             subscriber: Optional[Subscriber] = None
     ) -> Tuple[str, str, Any, JobStatus, Optional[Dict[str, str]]]:
         """