stonehenge: install marge bot and renovate bot

flake.nix

@@ -106,6 +106,7 @@
 
       specialArgs = {
         inherit inputs;
+        self = inputs.self;
       };
       common_modules = [
         { nixpkgs.pkgs = pkgs; }
@@ -193,6 +194,8 @@
           inherit system specialArgs;
           modules = [
             { nixpkgs.pkgs = pkgs; }
+            ./system/marge-bot
+            ./system/renovate-bot
             ./hosts/stonehenge
             inputs.sops-nix.nixosModules.default
           ];