Check that maven-parent 9 works with all projects

git-svn-id: https://svn.apache.org/repos/asf/maven/artifact/trunk@683423 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 0e10db0..01a7a08 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>maven-parent</artifactId>
     <groupId>org.apache.maven</groupId>
-    <version>8</version>
+    <version>9-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.apache.maven.artifact</groupId>