fix: suppress complexity warning in validate_parameters method

Signed-off-by: Mohamed Belhsan Hmida <mohamedbelhsanhmida@gmail.com>

Author: BelhsanHmida

flexmeasures/data/schemas/forecasting/pipeline.py

@@ -186,7 +186,7 @@ def drop_none_values(self, data, **kwargs):
         return {k: v for k, v in data.items() if v is not None}
 
     @validates_schema
-    def validate_parameters(self, data: dict, **kwargs):
+    def validate_parameters(self, data: dict, **kwargs):  # noqa: C901
         start_date = data.get("start_date")
         end_date = data.get("end_date")
         predict_start = data.get("start_predict_date", None)