Bump xmlunit-core from 2.6.3 to 2.7.0

Bumps [xmlunit-core](https://github.com/xmlunit/xmlunit) from 2.6.3 to 2.7.0.
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/master/RELEASE_NOTES.md)
- [Commits](xmlunit/xmlunit@v2.6.3...v2.7.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

pom.xml

@@ -206,7 +206,7 @@
       <dependency>
         <groupId>org.xmlunit</groupId>
         <artifactId>xmlunit-core</artifactId>
-        <version>2.6.3</version>
+        <version>2.7.0</version>
       </dependency>
       <dependency>
         <groupId>org.xmlunit</groupId>