Make CI pipelines the same across projects

[stevenbal]

Not sure if this repo is the right place for this issue, but I noticed that Open Zaak has an image_scan job in the CI pipeline: https://github.com/open-zaak/open-zaak/blob/main/.github/workflows/ci.yml#L268. Is this something we want in the other projects as well?

In general, I think it is a good idea to check if the pipelines are the same (or at least as close as possible) and up to date when it comes to versions for actions

• [ ] Add the best things to the default project - api folder.
• [ ] Make sure all the API projects have similar CI pipelines

[stevenbal]

Maybe we could make use of https://github.com/maykinmedia/setup-django-backend/tree/v1.3