Update to latest commons-parent pom

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1741880 13f79535-47bb-0310-9956-ffa450edef68

Author: britter

pom.xml

@@ -20,7 +20,7 @@ limitations under the License.
   <parent>
     <groupId>org.apache.commons</groupId>
     <artifactId>commons-parent</artifactId>
-    <version>39</version>
+    <version>40</version>
   </parent>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-csv</artifactId>