Merge pull request #3618 from eXist-db/dependabot/maven/xmlunit.version-2.8.1

Bump xmlunit.version from 2.8.0 to 2.8.1

Author: dizzzz

exist-parent/pom.xml

@@ -114,7 +114,7 @@
         <lucene.version>4.10.4</lucene.version>
         <milton.version>1.8.1.3</milton.version>
         <saxon.version>9.9.1-7</saxon.version>
-        <xmlunit.version>2.8.0</xmlunit.version>
+        <xmlunit.version>2.8.1</xmlunit.version>
 
         <!-- needed just for the license-maven-plugin in this module! -->
         <project.parent.relativePath>.</project.parent.relativePath>