Auto-update GitHub Action dependencies

[james-s-w-clark]

Summary
This will keep stuff like - uses: actions/checkout@v2 updated (v3 is latest) in Github Actions, e.g. in the CI action

Actions are often updated with bug fixes and new features to make automated processes more reliable, faster, and safer. When you enable Dependabot version updates for GitHub Actions, Dependabot will help ensure that references to actions in a repository's workflow.yml file are kept up to date.
~ https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[daddykotex]

thanks for the PR @IdiosApps

[daddykotex]

Let's get updated