Bump xmlunit.version from 2.9.1 to 2.10.0

Bumps `xmlunit.version` from 2.9.1 to 2.10.0.

Updates `org.xmlunit:xmlunit-legacy` 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)

Updates `org.xmlunit:xmlunit-assertj3` 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-legacy
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.xmlunit:xmlunit-assertj3
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -494,7 +494,7 @@
         <spring.version>6.1.3</spring.version>
         <wsdl4j.version>1.6.3</wsdl4j.version>
         <xmlbeans.version>3.0.1</xmlbeans.version>
-        <xmlunit.version>2.9.1</xmlunit.version>
+        <xmlunit.version>2.10.0</xmlunit.version>
         <xml_resolver.version>1.2</xml_resolver.version>
         <commons.cli.version>1.7.0</commons.cli.version>
         <!-- The build failing if tests are skipped is very annoying -->