The internal blueprint implementation has been removed from
osbuild/images. Conversion from osbuild/blueprint blueprints to
osbuild/images blueprints is no longer necessary.
Use the version that contains the updated Koji upload code.
Also bump the version of `osbuild/blueprint` due to the new `uri` field
in file customizations.
Signed-off-by: Tomáš Hozza <thozza@redhat.com>
