Please update Ubuntu Focal 20.04 LTS base installation due to a compiling error with gcc 9.2.1

We have trouble in building a wheel for python psutil 5.7.0. See at

It seems as if a newer version of gcc will cure this. Currently Travis is using gcc (Ubuntu 9.2.1-28ubuntu1) 9.2.1 20200203 but a normal desktop or server installation is using gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)

The problem seems to be here as well: steinbergmedia/vst3sdk#55

Until there is a fix in sight, the following snippet added in our .travis.yml

    - sudo apt-get update
    - sudo apt-get install gcc --only-upgrade

did the trick.

Since Travis team updated gcc to 9.3.0 for the provided version of Ubuntu the problem is solved.