Upgrade parent to get authservice 1.15.18 and postgresql jdbc 42.7.2

pom.xml

@@ -20,7 +20,7 @@ under the License.
     <parent>
         <groupId>no.priv.bang.pom</groupId>
         <artifactId>bang-authservice-client-pom</artifactId>
-        <version>1.1.46</version>
+        <version>1.1.48</version>
     </parent>
     <groupId>no.priv.bang.sampleapp</groupId>
     <artifactId>sampleapp</artifactId>