How to develop CRDs with hack/udpate-codegen.sh?

[Jonnymcc]

I'm trying to extend the CRD for secretproviderclasses so that it supports a templates field. The templates are rendered as literals in the resulting secret and can template values inside the template using other secret literals in the generated secret resource.

I can't get hack/update-cdoegen.sh to work though. I get errors about flags like --output-package not being valid.

I'm using go version go1.23.3 darwin/arm64 on a Mac with an M1 chip.