fix(ci): Remove duplicate attestation push command (#1803)

Signed-off-by: Javier Rodriguez <[email protected]>

Author: javirln

.github/workflows/release.yaml

@@ -157,7 +157,6 @@ jobs:
         id: attestation_push
         if: ${{ success() }}
         run: |
-          chainloop attestation push --attestation-id ${{ needs.init_attestation.outputs.attestation_id }}
           attestation_sha=$(chainloop attestation push --attestation-id ${{ needs.init_attestation.outputs.attestation_id }} -o json | jq -r '.digest')
           # check that the command succeeded
           [ -n "${attestation_sha}" ] || exit 1