Please describe prerequisites that must exist befor starting with this template

### What problem are you facing?

While trying to use this template, I struggled running the make reviewable make script. It allways failed in the golangci-lint stage.
It turns out, that this was a problem with the go version I was running - I used 1.20 and switching to 1.19 solved it.

### How could Crossplane help solve your problem?
Don't know what other problems will come up in the future, but writing down the prerequisites would be great