As Node 16 is now the [new default at GitHub Actions in hosted runners](https://github.blog/changelog/2021-12-10-github-actions-github-hosted-runners-now-run-node-js-16-by-default/) and Node 12 reached EOL April 2022 this action should run with Node 16 by default. Similar changes were implemented e.g. for [codecov-action](https://github.com/codecov/codecov-action/pull/689), [checkout](https://github.com/actions/checkout/releases/tag/v3.0.0) or [setup-java](https://github.com/actions/setup-java/pull/290).
As Node 16 is now the new default at GitHub Actions in hosted runners and Node 12 reached EOL April 2022 this action should run with Node 16 by default.
Similar changes were implemented e.g. for codecov-action, checkout or setup-java.