await gather task

lib/tasks/cognigy/index.js

@@ -321,7 +321,7 @@ class Cognigy extends Task {
               turnConfig: evt?.data?.config?.nextTurn
             });
             try {
-              this.gatherTask.exec(cs, ep, this);
+              await this.gatherTask.exec(cs, ep, this);
             } catch (err) {
               this.logger.info({err}, 'Cognigy gather task returned error');
             }