Pin setup-envtest

setup-envtest is installed in the automatically generated makefile target.
Pinning its version to avoid updates to its repo like the minimum golang version in the go.mod can break compatibility and CI.

See kubernetes-sigs/kubebuilder#2480

Makefile

@@ -259,6 +259,7 @@ ENVTEST ?= $(LOCALBIN)/setup-envtest
 ## Tool Versions
 KUSTOMIZE_VERSION ?= v4.5.7
 CONTROLLER_TOOLS_VERSION ?= v0.11.1
+SETUP_ENVTEST_VERSION ?= release-0.17
 
 KUSTOMIZE_INSTALL_SCRIPT ?= "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"
 .PHONY: kustomize
@@ -279,7 +280,7 @@ $(CONTROLLER_GEN): $(LOCALBIN)
 .PHONY: envtest
 envtest: $(ENVTEST) ## Download envtest-setup locally if necessary.
 $(ENVTEST): $(LOCALBIN)
-	test -s $(LOCALBIN)/setup-envtest || GOBIN=$(LOCALBIN) GOFLAGS='' go install sigs.k8s.io/controller-runtime/tools/setup-envtest@latest
+	test -s $(LOCALBIN)/setup-envtest || GOBIN=$(LOCALBIN) GOFLAGS='' go install sigs.k8s.io/controller-runtime/tools/setup-envtest@$(SETUP_ENVTEST_VERSION)
 
 .PHONY: bundle
 bundle: manifests kustomize ## Generate bundle manifests and metadata, then validate generated files.