Bump fop from 2.1 to 2.2

Bumps fop from 2.1 to 2.2.

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

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

Author: dependabot[bot]

pom.xml

@@ -42,7 +42,7 @@
         <junit.version>4.13.1</junit.version>
         <mockito.version>3.11.2</mockito.version>
         <poi.version>3.17</poi.version>
-        <xmlgraphics.version>2.1</xmlgraphics.version>
+        <xmlgraphics.version>2.2</xmlgraphics.version>
         <maven.compiler.plugin.version>3.8.1</maven.compiler.plugin.version>
         <maven.appassembler.plugin.version>2.1.0</maven.appassembler.plugin.version>
         <maven.assembly.plugin.version>3.3.0</maven.assembly.plugin.version>