[meta] these variables are not actually sensitive

meta/linode/variables.tf

@@ -1,17 +1,25 @@
 variable "domain" {
   type      = string
   nullable  = false
-  sensitive = true
 }
 
 variable "letsencrypt_email" {
   type      = string
   nullable  = false
+}
+
+variable "monica_db_host" {
+  type      = string
+  nullable  = false
+}
+
+variable "monica_db_password" {
+  type      = string
+  nullable  = false
   sensitive = true
 }
 
 variable "nixos_image_id" {
   type      = string
   nullable  = false
-  sensitive = true
 }