I'm not aware of any public example (very well could be some), but what do you want to test? At a high level, you can run:
• Lint
• Test
• Package (and optionally publish or merge to something like JFrog or GitHub packages?)
• End-to-end tests on sample data
Except for the last piece, it's honestly not too different from a standard CI setup, and you can find a lot of examples online. If you're running into problems, I/we can potentially take a quick look.
(Since you're internal to QB, and if you're looking for a place to start, you may be able to find a DE Coffee presentation from 4-5 years ago setting up CircleCI in a few minutes with Kedro 0.15 or something.)
End-to-end testing is slightly more debated + complicated. I personally like Kedro's approach well enough and reference that.