RHEL AI: ilab model download command failing with error "unauthorized: access to the requested resource is not authorized"

Issue

• RHEL AI: ilab model download command failing with error.

$ ilab model download --release latest --repository docker://registry.redhat.io/rhelai1/ranite-3.1-8b-lab-v1
INFO 2025-03-07 17:36:40,984 instructlab.model.download:193: Downloading model from OCI registry:
    Model: docker://registry.redhat.io/rhelai1/ranite-3.1-8b-lab-v1@latest
    Destination: /var/home/instruct/.cache/instructlab/models
FATA[0000] initializing source docker://registry.redhat.io/rhelai1/ranite-3.1-8b-lab-v1:latest: reading manifest latest in registry.redhat.io/rhelai1/ranite-3.1-8b-lab-v1: unauthorized: access to the requested resource is not authorized 
Downloading failed with the following exception: 
Downloading model failed with the following error: 
Failed to run skopeo command:
    Command '['skopeo', 'copy', 'docker://registry.redhat.io/rhelai1/ranite-3.1-8b-lab-v1:latest', 'oci:/var/home/instruct/.cache/instructlab/oci/ranite-3.1-8b-lab-v1', '--remove-signatures']' returned non-zero exit status 1..
    stderr: None