Node.js actions deprecated in workflow runs

[mikkamp]

Describe the issue:

Just logging warnings that show up when running workflows:

As far as I can see we don't necessarily need to make the extension compatible with this Node version, but only have the action run with the newer node version. For actions like woocommerce/grow/get-plugin-releases@actions-v1 that should be possible to switch to a newer node version. For actions/checkou@v3 it should be enough tot switch to v4 as long as there are no breaking changes.

[mikkamp]

This is being resolved in https://github.com/woocommerce/grow/issues/108