GitHub actions are a great CI/CD setup for every open-source project. Of course, as long, as the project is hosted on GitHub. It turned out, however, that cryptocurrency miners started to take advantage of that and propose abusive pull requests that were mining cryptos using GitHub computing power.
This changed somehow. Yes, if you really, really want to, you can propose a PR that will mine for you, but now, if you are a first time contributor, Actions will not run until someone approves it.