Bump xmlunit.version from 2.6.3 to 2.8.2
Bump xmlunit.version from 2.6.3 to 2.8.2

Bumps `xmlunit.version` from 2.6.3 to 2.8.2.

Updates `xmlunit-core` from 2.6.3 to 2.8.2
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](https://github.com/xmlunit/xmlunit/compare/v2.6.3...v2.8.2)

Updates `xmlunit-matchers` from 2.6.3 to 2.8.2
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](https://github.com/xmlunit/xmlunit/compare/v2.6.3...v2.8.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
apache/santuario-xml-security-java,apache/santuario-xml-security-java,apache/santuario-xml-security-java