Should use a recent version of setup-envtest

[mboersma]

CAAPH should update setup-envtest to a commit on main that fetches envtest binaries from the GitHub release on the controller-tools repo. This is to move away from using GCP resource buckets.

See kubernetes-sigs/cluster-api-provider-azure#4888 for an example.

For context, see

• 🌱 Use setup-envtest from CR main (05/2024) to use envtest binaries from CT releases kubernetes-sigs/cluster-api#10569
• ✨ setup-envtest: download binaries from controller-tools releases kubernetes-sigs/controller-runtime#2811