Remove push action from build action / verify preview run

[ricardozanini]

Closes/Fixes/Resolves #ISSUE-NUMBER

Description:
Small PR to verify if the preview actions are working and fixing it.

Relates to #539

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[ricardozanini]

Ok, we need more work from Infra to get this going since we are missing the PAT token in the download action run: https://github.com/actions/download-artifact?tab=readme-ov-file#download-artifacts-from-other-workflow-runs-or-repositories

[ricardozanini]

@domhanak merging since we need to verify that after the workflow is updated on main. Really annoying.