Set commons.release.version to 1.6.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1086603 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 1fd32ae..e3acd11 100644
--- a/pom.xml
+++ b/pom.xml
@@ -188,7 +188,7 @@
     <maven.compile.source>1.4</maven.compile.source>
     <maven.compile.target>1.4</maven.compile.target>
     <commons.componentid>codec</commons.componentid>
-    <commons.release.version>1.5</commons.release.version>
+    <commons.release.version>1.6</commons.release.version>
     <!-- The RC version used in the staging repository URL. -->
     <commons.rc.version>RC1</commons.rc.version>
     <commons.jira.id>CODEC</commons.jira.id>