Set parent pom to released version.

git-svn-id: https://svn.apache.org/repos/asf/incubator/sling/trunk@774798 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index e190fa5..b128603 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>6-incubator-SNAPSHOT</version>
+        <version>5-incubator</version>
         <relativePath>../../../parent/pom.xml</relativePath>
     </parent>