Update dependabot.yml to auto update github actions #702

[brokoli777]

Fixes #702.

Hello! This change would automatically update GitHub Actions like actions/checkout@v3 to the latest version whenever a new version is released.

If we only want to update specific GitHub actions, we can specify it like this:

allow:
  - dependency-name: "actions/checkout"
  - dependency-name: "actions/setup-python"

[whimboo]

Hi Bregwin. Thanks a lot for your PR! It looks good and there is just a tiny thing that I would propose to update, which you can find inline. I'll land the suggestion and then merge your PR.

If you have interest to contribute more to our repository I'm happy to mentor other issues as well. Some are specifically tagged for mentored but feel free to choose depending on your experience. Thanks again!

[brokoli777]

Thank you! Yes, I would like to work on another issue as well. I will look at the posted issues and try to work on one when I get some free time.