Bump org.postgresql 42.7.8

Author: vharseko

opendj-server-legacy/pom.xml

@@ -266,7 +266,7 @@
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>[42.7.7,)</version>
+      <version>42.7.8</version>
     </dependency>
     <dependency>
       <groupId>org.testng</groupId>