ci: fix the name of the u-root image
I have been working on moving to ci-templates over the weekend, but since I failed to finish in time, let's merge this quick fix for the build regression that came with the amd64 merge.
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I have been working on moving to ci-templates over the weekend, but since I failed to finish in time, let's merge this quick fix for the build regression that came with the amd64 merge.