During our regular testing, an expired certificate issue was identified related to the SoapUI ValidationSuite embedded server. This is causing CONNECT 4.x source code builds to fail (binary installs are not affected). A ticket has been created to document this issue here: https://issues.connectopensource.org/browse/CONN-733.
A fix is in place for the latest version of CONNECT(4.3.0-SNAPSHOT) . However, since the tags are already cut for CONNECT versions 4.0.0, 4.1.0, and 4.2.0, this change will not fix broken builds on those branches/tags.