Replace ORAS with Cosign Download

Merge Request Description

Merge Request BOE

Risk

Direct updates to scan-logic and upload-to-harbor jobs

Rollback Plan

Revert MR

Testing

https://code-ib-zelda.staging.dso.mil/dsop/redhat/ubi/ubi8/-/pipelines/3352 https://code-ib-zelda.staging.dso.mil/dsop/redhat/openjdk/openjdk11/-/pipelines/3353 https://code-ib-zelda.staging.dso.mil/dsop/opensource/python/python39/-/pipelines/3354