Fedora 42 has been released, and its container-image does not seem to
include `awk` anymore. `awk` is used during the preparation phase of the
golangci-lint test, and possibly others.
By installing `awk` in the test container-image, all scripts seem to
work well with the Fedora 42 container-image.
Signed-off-by: Niels de Vos <ndevos@ibm.com>