Update to Sling Parent 23

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1687500 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 3a31fbc..1a4d9c7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
     <parent>

         <groupId>org.apache.sling</groupId>

         <artifactId>sling</artifactId>

-        <version>22</version>

+        <version>23</version>

         <relativePath />

     </parent>