David Kimura PRO said 8 months ago :
That's really strange. Do you happen to use a self hosted runner for those actions? If so, check your disk space on the runner machine.

If you're using one of their hosted runners, it may be work looking into seeing if anything changed, or try bumping the checkout version to the latest one. You can also add some flags to cURL which could help as well. 

          curl -sS -L -f --retry 5 --retry-all-errors \
            -o download.zip \
            "https://auth.once.com/download/${PURCHASE_TOKEN}"

Typically when I encounter these kinds of issues, I'll put in extra action steps like this after the download and before the unzip.

      - name: List Files
        run: ls -lh