[Fixes #11855] Reduce log level in donwload handler (#11856) (#11874)

Co-authored-by: mattiagiupponi <51856725+mattiagiupponi@users.noreply.github.com>

geonode/layers/download_handler.py

@@ -97,7 +97,7 @@ def get_resource(self):
                     _("You do not have download permissions for this dataset."),
                 )
             except Exception as e:
-                logger.exception(e)
+                logger.debug(e)
 
         return self._resource