Updating GitHUb Actions

[linkdotnet]

There is a nice GitHub action, which can automatically update our GitHub action: https://github.com/saadmk11/github-actions-version-updater

I use this also in a few of my repo's and it's kind of nice. Why stopping with nuget packages when you can update your actions as well?

If you think this is a nice idea to have, I can create a PR. The only thing you would have to do is to create a repo secret which is mapped to a PAT, which has the workflow permission. I do think we could use the BUNIT_BOT with it's permission for that as well.

[linkdotnet]

I took the liberty of filing a PR: #908