chore: use skopeo from rockcraft

[gruyaume]

Description

Use skopeo from rockcraft. This addresses an issue where we were not able to copy the built OCI image to docker images. The skopeo version in the snap dates from 2019 (v1.13.3) as the one in rockcraft is more recent (v1.14.2)

Logs

time="2024-06-14T18:40:29Z" level=fatal msg="writing blob: io: read/write on closed pipe"

Reference

• build(deps): update skopeo to 1.14.2 rockcraft#477

Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that validate the behaviour of the software.
• I validated that new and existing tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.