We currently build on Ubuntu 22.04 twice, for GCC and CLang
with santizers turned on. Moving the GCC santizers build
to 20.04 lets us cull one of the 22.04 jobs
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
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