Bump xmlgraphics.version from 2.10 to 2.11

Bumps `xmlgraphics.version` from 2.10 to 2.11.

Updates `org.apache.xmlgraphics:fop-core` from 2.10 to 2.11

Updates `org.apache.xmlgraphics:fop-events` from 2.10 to 2.11

Updates `org.apache.xmlgraphics:xmlgraphics-commons` from 2.10 to 2.11

---
updated-dependencies:
- dependency-name: org.apache.xmlgraphics:fop-core
  dependency-version: '2.11'
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.xmlgraphics:fop-events
  dependency-version: '2.11'
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.xmlgraphics:xmlgraphics-commons
  dependency-version: '2.11'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

extensions/modules/xslfo/pom.xml

@@ -47,7 +47,7 @@
 
     <properties>
         <avalon.framework.version>4.3.1</avalon.framework.version>
-        <xmlgraphics.version>2.10</xmlgraphics.version>
+        <xmlgraphics.version>2.11</xmlgraphics.version>
     </properties>
 
     <dependencies>