Bump xmlgraphics-commons from 1.5 to 2.6 in /helps

Bumps xmlgraphics-commons from 1.5 to 2.6.

---
updated-dependencies:
- dependency-name: org.apache.xmlgraphics:xmlgraphics-commons
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/helps/pom.xml b/helps/pom.xml
index 354ea94..af159cd 100644
--- a/helps/pom.xml
+++ b/helps/pom.xml
@@ -174,7 +174,7 @@
               <dependency>
                 <groupId>org.apache.xmlgraphics</groupId>
                 <artifactId>xmlgraphics-commons</artifactId>
-                <version>1.5</version>
+                <version>2.6</version>
                 <scope>compile</scope>
               </dependency>
             </dependencies>