[xmlunit/xmlunit] 9118af: prepare XMLUnit 2.9.1

[Stefan B. <no...@gi...>]

  Branch: refs/tags/v2.9.1
  Home:   https://github.com/xmlunit/xmlunit
  Commit: 9118af20aeaa6b8665be9c13fc84c1fd25b51acd
      https://github.com/xmlunit/xmlunit/commit/9118af20aeaa6b8665be9c13fc84c1fd25b51acd
  Author: Stefan Bodewig <bo...@ap...>
  Date:   2023-01-10 (Tue, 10 Jan 2023)

  Changed paths:
    M .travis.yml
    M RELEASE_NOTES.md
    M pom.xml
    M xmlunit-assertj/pom.xml
    M xmlunit-assertj3/pom.xml
    M xmlunit-core/pom.xml
    M xmlunit-jakarta-jaxb-impl/pom.xml
    M xmlunit-legacy/pom.xml
    M xmlunit-matchers/pom.xml
    M xmlunit-placeholders/pom.xml

  Log Message:
  -----------
  prepare XMLUnit 2.9.1