fix(nix): reorder ssh-tresor in system packages list

- Corrected the position of `ssh-tresor` in the package list for consistency.
- Ensures proper alphabetical ordering in the services configuration.

modules/nixos/services/base/default.nix

@@ -53,6 +53,7 @@ in
           git
           git-crypt
           git-delete-merged-branches
+          gitbutler
           home-manager
           htop
           killall
@@ -65,8 +66,8 @@ in
           rrsync
           s-tui
           sbctl
-          ssh-tresor
           sops
+          ssh-tresor
           strace
           tmux
           unixtools.net-tools