Noble has python 3.12 which is what we're trying to move our Gerrit
container images to. Update testing here to ensure we're covering this
python runtime before we update production.
We need to change how we install jeepyb and gerritlib in testing to
accomodate restrictions on global pip installs with newer python.
Change-Id: I21053ee8f646d1ab4abdfd606ac935d94bcf4923
4c5160641f