Bug#990538: Please package a new testng version 7.x

[Matthias Klose]

Package: src:testng

OpenJDK 17, and 18 now require jtreg 6 to run the tests.  Looking at jtreg 6
itself, I read:

* TestNG:
    See <http://testng.org/>. The recommended version is currently 7.3.0.
    (Do not use 7.4.0 to run OpenJDK tests.)
    TestNG has dependencies on JCommander and Google Guice.
    The recommended version of JCommander is 1.78.
    The recommended version of Google Guice is 4.2.3.

Not sure why 7.4 is not recommended, but a new version of testng in the distro
would be appreciated.  The current work-around for openjdk-17 is to not run the
tests.