Revert "DIRKRB-437 Update the assertj version to 3.2.0."
Revert "DIRKRB-437 Update the assertj version to 3.2.0."

This reverts commit 9ce2a555ead13d336ee2d719bc0bedd8557089c7.

YaningX/directory-kerby,bitium/directory-kerby,apache/directory-kerby,drankye/directory-kerby,plusplusjiajia/directory-kerby,plusplusjiajia/directory-kerby,apache/directory-kerby,apache/directory-kerby,bitium/directory-kerby,drankye/directory-kerby,YaningX/directory-kerby,plusplusjiajia/directory-kerby