sling-slingstart-archetype: use sling-archetype-parent 4

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk/tooling/maven/archetypes/slingstart@1709102 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index f7427e4..268ac70 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
         <groupId>org.apache.sling</groupId>
         <artifactId>sling-archetype-parent</artifactId>
         <relativePath/>
-        <version>4-SNAPSHOT</version>
+        <version>4</version>
     </parent>
     <artifactId>sling-slingstart-archetype</artifactId>
     <version>0.9.0-SNAPSHOT</version>