Feature: renovatebot auto update of patch versions and automerge on pyproject version update

[jessebot]

Describe the feature you'd like, and why

I'd like renovate bot to automatically update the smol-k8s-lab version when it updates a poetry dependency library for patch versions and then auto-merge. This may require switching to the small-hack renovate app. We'll have to look into it.

The reason I want this is that it would mean less hands-on maintenance for me to deal with every week.