Node version warning

We get the following warning when using this action:

```Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: mablhq/github-run-tests-action@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.```

What's your timeline for upgrading to node 20?