Update systemd options for recent nixpkgs

[fsagbuya]

Description

This patch aims to:

• Add the new systemd.tmpfiles option on recent nixpkgs. This is to fix the error log when switching to nixpkgs 23.11:

  error: The option `systemd.tmpfiles' does not exist. Definition values:
     - In `/nix/store/6h04ab83y72nm16hh9g3llgg0s296ynl-source/nixos/modules/system/activation/activation-script.nix':
         {
           rules = [
             "d /nix/var/nix/gcroots -"
             "L+ /nix/var/nix/gcroots/current-system - - - - /run/current-system"
             "D /var/empty 0555 root root -"
         ...
  (use '--show-trace' to show detailed location information)