Feel free to open a PR. GitHub Actions will automatically build & push the distribution file after each push.
Don't worry when the build & check action doesn't run: it has to be triggered manually as it is not triggered when workflow pushes.
To make a new release, simply create a new GitHub release (& tag), wait and update release notes after a while.
GitHub Actions will automatically bump the version in package.json and push all tags, incl. major and minor versions.