Update virt-who to 1.31.21-1
    Resolves: #1987247 - The connection value shows null for kubevirt mode in virt-who status
    Resolves: #2000415 - Nutanix config needs to handle bad server value (wpoteat@redhat.com)
    Resolves: #1996942 - Use cluster name instead of UUID for fabric consistency
    Resolves: #1990758 - Virt-who always prints YAMLLoadWarning for kubevirt mode
    Resolves: #1990563 - Move progress bar to stderr to keep stdout clean