[uat-sit] increase maximumPoolSize for dataflow-app

crss-dataflow-app/crss-dataflow-app-pemc-uat-sit.yml

@@ -5,6 +5,7 @@ spring:
       username: crss_dataflow
       password: crss_dataflow
       driverClassName: org.postgresql.Driver
+      maximumPoolSize: 20
   redis:
     database: 4