Pin helm provider

Author: niallthomson

manifests/.workshop/terraform/base.tf

@@ -8,7 +8,7 @@ terraform {
     }
     helm = {
       source  = "hashicorp/helm"
-      version = ">= 2.4.1"
+      version = "2.9.0"
     }
     kubectl = {
       source  = "gavinbunney/kubectl"