ubuntu/focal64 has unmet python deps

[cmsirbu]

apport package doesn't install all needed python3 libs

vagrant@ubuntu-focal:/vagrant$ pip check
pygobject 3.36.0 requires pycairo, which is not installed.
launchpadlib 1.10.13 requires testresources, which is not installed.

[cmsirbu]

Remove from Vagrantfile once this is fixed.

    # Fix unmet dependency of system packages #12
    apt-get install python3-testresources python3-cairo --yes --no-install-recommends

[cmsirbu]

Reduced to pycairo only - to be addressed when switching to a packer build. Affects ubuntu/jammy64 as well.

# Fix unmet dependency of system packages #12
    apt-get install python3-cairo --yes --no-install-recommends