Update tooling in Machine API Provider GCP

Background

Currently our approach to manage and update auxiliary tooling (such as envtest, controller-gen, etc) is inconsistent. Fine pattern was introduced in CPMS repo, which relies on golang toolchain for update, vendor and run this auxiliary tooling.

For CPMS context see:

https://github.com/openshift/cluster-control-plane-machine-set-operator/blob/main/tools/tools.go

https://github.com/openshift/cluster-control-plane-machine-set-operator/blob/main/go.mod#L24

https://github.com/openshift/cluster-control-plane-machine-set-operator/blob/main/Makefile#L19

Steps

• Align envtest, controller-gen and other tooling management with pattern introduced within CPMS repo
• Introduce additional test which compares envtest version (if envtest is in use within particular repo) with using k8s related libraries version. This will help to not forget to update envtest and other aux tools during dependency bumps.