help:evaluate return warnings with -DforceStdout

[long76]

Affected version

3.5.1

Bug description

mvn help:evaluate -q -Dexpression=project.properties -DforceStdout

on jdk 25 return warnings on top before print properties

WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
WARNING: sun.misc.Unsafe::objectFieldOffset has been called by com.thoughtworks.xstream.converters.reflection.SunUnsafeReflectionProvider (file:/home/user/.m2/repository/com/thoughtworks/xstream/xstream/1.4.20/xstream-1.4.20.jar)
WARNING: Please consider reporting this to the maintainers of class com.thoughtworks.xstream.converters.reflection.SunUnsafeReflectionProvider
WARNING: sun.misc.Unsafe::objectFieldOffset will be removed in a future release

[cstamas]

Related x-stream/xstream#362

Also related x-stream/xstream#262