Adding hashicorp/random provider

infra/vultr-kubernetes/backend.tf

@@ -27,11 +27,14 @@ terraform {
       source  = "hashicorp/helm"
       version = "3.0.2"
     }
-
     tls = {
       source  = "hashicorp/tls"
       version = "4.1.0"
     }
+    random = {
+      source = "hashicorp/random"
+      version = "3.7.2"
+    }
   }
 }