chore(mirror): Mirror the uv image

Copying over uv related changes from #1353

Author: NickLarsenNZ

.github/workflows/mirror.yaml

@@ -16,6 +16,7 @@ on:
           - registry.k8s.io/git-sync/git-sync
           - registry-1.docker.io/library/golang
           - registry-1.docker.io/dxflrs/garage
+          - ghcr.io/astral-sh/uv
       image-index-manifest-tag:
         description: |
           The image index manifest tag, like 1.0.14 or v1.0.14