Fix test TestSqlUpdateBatch with correct bind type for Postgres

ebean-core/src/test/java/org/tests/update/TestSqlUpdateBatch.java

@@ -34,7 +34,7 @@ public class TestSqlUpdateBatch extends BaseTestCase {
           .setParameter(1, String.valueOf(i))
           .addBatch();
         delete
-          .setParameter(1, String.valueOf(i))
+          .setParameter(1, i)
           .addBatch();
       }