How to upgrade Kubernetes dependencies

General steps:

1. modify target versions in go-update-wc-deps.sh
2. run ./go-update-wc-deps.sh
3. if it fails, fix the test/code, and run it again until all tests are good - except install/installer
4. take care of install/installer
5. manually verify that the go.mod has the target versions set, and if not, adjust manually (not sure why these get overriden there)
6. make sure helm.sh/helm/v3 is set to a compatible version (refer to https://github.com/helm/helm/releases/ to see which release bumps "k8s-io" to which version)
7. test with go mod tidy && go test ./... until it succeeds

gpl: I just noticed that probably go-get-kubernetes.sh was meant for bumping kubernetes versions in common-go - which I did manually. So probably that should be the very first step.