Update the contrib reactor to parent 25

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1706781 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 5f9bea7..1d3e4ee 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>24</version>
+        <version>25</version>
         <relativePath />
     </parent>