Bump xmlunit-core to 2.10.0

https://github.com/xmlunit/xmlunit/releases/tag/v2.10.0

Signed-off-by: Ivan Hrasko <ivan.hrasko@pantheon.tech>
(cherry picked from commit fa47ce8)

Author: ihrasko

examples/parents/examples-bom/pom.xml

@@ -77,7 +77,7 @@
             <dependency>
                 <groupId>org.xmlunit</groupId>
                 <artifactId>xmlunit-core</artifactId>
-                <version>2.9.1</version>
+                <version>2.10.0</version>
             </dependency>
         </dependencies>
     </dependencyManagement>