[TEST] Apache Struts 6.7.0 test build is ready

Hello,

This is a minor release of Struts 6.x series mostly because of
depreciating a lot of classes.
Please take the time and test the bits - any help is appreciated.
Please report any problems you will spot.

Here are the changes from the previous version:
https://github.com/apache/struts/releases/tag/STRUTS_6_7_0

Staging Maven repo
https://repository.apache.org/content/groups/staging/

Standalone artifacts
https://dist.apache.org/repos/dist/dev/struts/6.7.0/

Release notes
https://cwiki.apache.org/confluence/display/WW/Version+Notes+6.7.0


Kind regards
--
Łukasz