fix: iso setup failing when password starts with dash(-)

configs/airootfs/root/configurator

@@ -73,7 +73,7 @@ user_form() {
   done
 
   # Hash the password using yescrypt
-  password_hash=$(openssl passwd -6 "$password")
+  password_hash=$(printf '%s' "$password" | openssl passwd -6 -stdin)
 
   full_name=$(gum input --placeholder "Used for git authentication (hit return to skip)" --prompt.foreground="#845DF9" --prompt "Full name> ")
   email_address=$(gum input --placeholder "Used for git authentication (hit return to skip)" --prompt.foreground="#845DF9" --prompt "Email address> ")