Bump org.apache.commons:commons-parent from 78 to 79

The changes report is generated with Doxia 2 as changes.html instead of
changes-report.html

Author: garydgregory

src/site/xdoc/index.xml

@@ -49,7 +49,7 @@ The <a href="scm.html">Git repository</a> can be
 </p>
 
  <p>
-  For information on previous releases see the <a href="changes-report.html">Release History</a>, and to download previous releases see the <a href="https://archive.apache.org/dist/commons/text/">Commons Text Archive</a>.
+  For information on previous releases see the <a href="changes.html">Release History</a>, and to download previous releases see the <a href="https://archive.apache.org/dist/commons/text/">Commons Text Archive</a>.
  </p>
 
 </section>