Bump org.xmlunit:xmlunit-core in /modello-plugins/modello-plugin-xpp3

Bumps [org.xmlunit:xmlunit-core](https://github.com/xmlunit/xmlunit) from 2.9.1 to 2.10.0.
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](xmlunit/xmlunit@v2.9.1...v2.10.0)

---
updated-dependencies:
- dependency-name: org.xmlunit:xmlunit-core
  dependency-type: direct:development
...

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

modello-plugins/modello-plugin-xpp3/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>org.xmlunit</groupId>
       <artifactId>xmlunit-core</artifactId>
-      <version>2.9.1</version>
+      <version>2.10.0</version>
       <scope>test</scope>
     </dependency>
   </dependencies>