Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/home/runner/work/aztec-packages/aztec-packages/.github/ensure-builder'. Did you forget to run actions/checkout before running your local action?

The Ubuntu-20.04 brownout takes place from 2025-02-01. For more details, see https://github.com/actions/runner-images/issues/11101