CLOUD-727: pin envtest version for unit tests (#2299)

Author: nmarukovich

Makefile

@@ -7,6 +7,7 @@ IMAGE ?= $(IMAGE_TAG_BASE):$(VERSION)
 DEPLOYDIR = ./deploy
 
 ENVTEST_K8S_VERSION = 1.31
+ENVTEST_VERSION ?= release-0.23
 
 all: build
 
@@ -94,7 +95,7 @@ kustomize: ## Download kustomize locally if necessary.
 
 ENVTEST = $(shell pwd)/bin/setup-envtest
 envtest: ## Download envtest-setup locally if necessary.
-	$(call go-get-tool,$(ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest@latest)
+	$(call go-get-tool,$(ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest@$(ENVTEST_VERSION))
 
 SWAGGER = $(shell pwd)/bin/swagger
 swagger: ## Download swagger locally if necessary.