buildx failed with: ERROR: failed to solve: failed to push ghcr.io/simon-initiative/amazon-linux-builder:update-ci-configs: failed commit on ref "manifest-sha256:c8488af2ef42cabf8d6674264a75df879ab414e9fac476ff60f2f951c26bf1de": unexpected status from PUT request to https://ghcr.io/v2/simon-initiative/amazon-linux-builder/manifests/sha256:c8488af2ef42cabf8d6674264a75df879ab414e9fac476ff60f2f951c26bf1de: 403 Forbidden