chore(deps): update terraform google to v6 (#726)

Author: renovate-bot

anthos-attached-clusters/kind/provider.tf

@@ -22,7 +22,7 @@ terraform {
     }
     google = {
       source  = "hashicorp/google"
-      version = "~> 5.0"
+      version = ">= 5, < 7"
     }
     helm = {
       source  = "hashicorp/helm"