Prefer go.mod's version of Helm

Author: mboersma

Makefile

@@ -203,7 +203,7 @@ TILT_PREPARE := $(abspath $(TOOLS_BIN_DIR)/$(TILT_PREPARE_BIN))
 GOLANGCI_LINT_BIN := golangci-lint
 GOLANGCI_LINT := $(abspath $(TOOLS_BIN_DIR)/$(GOLANGCI_LINT_BIN))
 
-HELM_VER := v3.14.4
+HELM_VER := $(call get_go_version,helm.sh/helm/v3)
 HELM_BIN := helm
 HELM := $(TOOLS_BIN_DIR)/$(HELM_BIN)-$(HELM_VER)