Update to postgresql-embedded 2.3

Fixes gh-1077

Author: kazuki43zoo

pom.xml

@@ -261,7 +261,7 @@
     <dependency>
       <groupId>ru.yandex.qatools.embed</groupId>
       <artifactId>postgresql-embedded</artifactId>
-      <version>2.2</version>
+      <version>2.3</version>
       <scope>test</scope>
     </dependency>
   </dependencies>