Thanks to Miroslav Vadkerti (mvadkert) for the workaround.
Without this an older version of osbuild-composer was being installed,
and it would not start the server.
Related: rhbz#1996788
This installs osbuild-composer, starts it, runs a couple simple
composer-cli commands to make sure it can talk to the server, and then
executes the weldr-client integration test suite.
Resolves: rhbz#1996788