Incorrectly flattened container image with "pull" command

The pull action podman pull $IMAGE_TAG in https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/blob/d069a0a1b96e1422168da6a0d2a8e4578bc93d23/.gitlab-ci.yml#L349 flattened multi-arch container image into a single arch container image. We should have this fixed and generate a new release.