workflows: Adjust unit-tests-refresh to recent container changes
workflows: Adjust unit-tests-refresh to recent container changes

Commit b746f5aef3671446 changed the unit-tests workflow, but not the
-refresh one.

mvollmer/cockpit,mvollmer/cockpit,martinpitt/cockpit,martinpitt/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,mvollmer/cockpit,cockpit-project/cockpit