podman.workflow test incorrect parsing of `podman rmi` output

Yields results in the logs of tests that looks like:

--- PASS: podman.workflow (367.30s)                                                           
    --- PASS: podman.workflow/run (306.45s)                                                   
            cluster.go:151: Trying to pull quay.io/fedora/fedora:latest...                    
            cluster.go:151: Getting image source signatures                                   
            cluster.go:151: Copying blob sha256:2d1766c96a03a5c0d88cb51417d01b1a11e0245c6c8a5dfe48a8a1629d64e8fc
            cluster.go:151: Copying config sha256:818c0c393dd42bdb323b3344c8a3db27597e00d8dc342e8253aa2838b1d5b570
            cluster.go:151: Writing manifest to image destination                             
    --- PASS: podman.workflow/exec (0.37s)                                                    
    --- PASS: podman.workflow/stop (10.57s)                                                   
    --- PASS: podman.workflow/remove (0.34s)                                                  
    --- PASS: podman.workflow/delete (0.42s)                                                  
            cluster.go:151: grep: quay.io/fedora/fedora:latest: No such file or directory     
            cluster.go:151: bash: line 2: Deleted:: command not found

Basically the code isn't parsing the outupt of podman rmi correctly any longer (podman must have changed).

[dustymabe@media ~]$ podman rmi quay.io/fedora-testing/fedora-bootc:rawhide-minimal
Untagged: quay.io/fedora-testing/fedora-bootc:rawhide-minimal
Deleted: 34871ba538d55e6c5f9e5e932c8810546f01fdaca9a6e41e84fda0c99fc00ce2

Start at mantle/kola/tests/podman/podman.go around line 218, where the podman rmi output is parsed. Run the podman workflow test and compare the parser with the shown Untagged and Deleted output. Done means the test no longer emits the image path or "Deleted:" as shell commands.