Bump xmlunit.version from 2.2.1 to 2.8.2 (#5180)
Bump xmlunit.version from 2.2.1 to 2.8.2 (#5180)

Bumps `xmlunit.version` from 2.2.1 to 2.8.2.

Updates `xmlunit-core` from 2.2.1 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/v2.2.1...v2.8.2)

Updates `xmlunit-matchers` from 2.2.1 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/v2.2.1...v2.8.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
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