Bump xmlunitVersion from 2.11.0 to 2.12.0 (#12190)

Bumps `xmlunitVersion` from 2.11.0 to 2.12.0.

Updates `org.xmlunit:xmlunit-core` from 2.11.0 to 2.12.0
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](xmlunit/xmlunit@v2.11.0...v2.12.0)

Updates `org.xmlunit:xmlunit-matchers` from 2.11.0 to 2.12.0
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](xmlunit/xmlunit@v2.11.0...v2.12.0)

---
updated-dependencies:
- dependency-name: org.xmlunit:xmlunit-core
  dependency-version: 2.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.xmlunit:xmlunit-matchers
  dependency-version: 2.12.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -170,7 +170,7 @@ under the License.
     <stax2ApiVersion>4.3.0</stax2ApiVersion>
     <wagonVersion>3.5.3</wagonVersion>
     <woodstoxVersion>7.2.0</woodstoxVersion>
-    <xmlunitVersion>2.11.0</xmlunitVersion>
+    <xmlunitVersion>2.12.0</xmlunitVersion>
     <jacocoArgLine />
 
     <!-- Set as system property in surefire/failsafe to propagate to tests and IT Verifier -->