Bump xmlunit-matchers from 2.6.3 to 2.7.0 (#31)

Bumps [xmlunit-matchers](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](https://github.com/xmlunit/xmlunit/compare/v2.6.3...v2.7.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/pom.xml b/pom.xml
index 0256872..2a6e3bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -187,7 +187,7 @@
       <dependency>
         <groupId>org.xmlunit</groupId>
         <artifactId>xmlunit-matchers</artifactId>
-        <version>2.6.3</version>
+        <version>2.7.0</version>
         <scope>test</scope>
       </dependency>