Update xmlgraphics-commons to 2.6 (from 2.3)

Closes #648

gradle.properties

@@ -128,7 +128,7 @@ tika.version=1.24.1
 xalan.version=2.7.2
 xercesImpl.version=2.12.1
 xml-apis.version=1.4.01
-xmlgraphics-commons.version=2.3
+xmlgraphics-commons.version=2.6
 xmlpull.version=1.1.3.1
 xpp3_min.version=1.1.4c
 xstream.version=1.4.15

lib/aareadme.txt

@@ -287,7 +287,7 @@ http://xerces.apache.org/xerces2-j/download.cgi
 
 The x* jars above are used for XML handling
 
-xmlgraphics-commons-2.3 (org.apache.xmlgraphics.image.codec)
+xmlgraphics-commons-2.6 (org.apache.xmlgraphics.image.codec)
 ------------------
 http://xmlgraphics.apache.org/commons/download.html
 - SaveGraphicsService

src/dist/src/dist/expected_release_jars.csv

@@ -92,7 +92,7 @@
 3154938,xalan-2.7.2.jar
 1386502,xercesImpl-2.12.1.jar
 220536,xml-apis-1.4.01.jar
-671727,xmlgraphics-commons-2.3.jar
+674607,xmlgraphics-commons-2.6.jar
 7188,xmlpull-1.1.3.1.jar
 24956,xpp3_min-1.1.4c.jar
 627848,xstream-1.4.15.jar

xdocs/changes.xml

@@ -119,6 +119,7 @@ Summary
 <ch_section>Non-functional changes</ch_section>
 <ul>
   <li><bug>65128</bug><pr>643</pr>Add missing documentation about <code>Same user on each iteration</code> for Thread Groups. Contributed by njkuzas.</li>
+  <li>Updated xmlgraphics-commons to 2.6 (from 2.3)</li>
 </ul>
 
  <!-- =================== Bug fixes =================== -->