Update xmlunit.version to v2.13.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.xmlunit:xmlunit-matchers (source)	2.12.0 → 2.13.0
org.xmlunit:xmlunit-core (source)	2.12.0 → 2.13.0

---

Release Notes

xmlunit/xmlunit (org.xmlunit:xmlunit-matchers)

v2.13.0

Compare Source

• added explicit settings to the Validator classes that disable (external) DTD loading during validation. The default
  remains to allow loading of external content as this is often a requirement during validation.

  PRs #​331 and #​332 by
  @​jmestwa-coder

• added constructor overloads to JAXPXPathEngine to allow specifying the DocumentBuilderFactory used for the
  Source overloads of the selectNodes and evaluate methods.

  PRs #​333 by @​jmestwa-coder

• IsDateTimePlaceholderHandler now parses the explicit and ISO date formats using Locale.US rather than the JVM
  default locale so results no longer depend on the host locale. An optional second argument allows specifying a
  different locale as a BCP 47 language tag.

  PR #​335 by @​jmestwa-coder

---

Configuration

📅 Schedule: (in timezone Europe/Bucharest)

• Branch creation
  • "after 1pm every weekday"
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.