[#849] Use a more recent version of nixpkgs

…for scripts and infrastructure to meet the requirements stated in the
terraform configuration

In this commit, changes have been made to the `flake.nix` file to
utilize a more recent version of nixpkgs for both scripts and
infrastructure. The modifications ensure that the scripts and
infrastructure align with the specified requirements in the terraform
configuration. Specifically, the nodePkgs import has been updated to
allow unfree packages, and the packages.scripts and packages.infra
sections have been adjusted to utilize the nodePkgs instead of
defaultPkgs. This adjustment guarantees that the scripts and
infrastructure components are in line with the necessary configurations,
enhancing compatibility and meeting the user story's demands.

flake.nix

@@ -9,12 +9,12 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         defaultPkgs = import default_nixpkgs { inherit system; config.allowBroken = true; };
-        nodePkgs = import node_nixpkgs { inherit system; };
+        nodePkgs = import node_nixpkgs { inherit system; config.allowUnfree = true; };
         frontend = nodePkgs.callPackage ./govtool/frontend { pkgs = nodePkgs; };
       in
       {
-        packages.scripts = defaultPkgs.callPackage ./scripts/govtool { pkgs = defaultPkgs; };
-        packages.infra = defaultPkgs.callPackage ./infra/terraform { pkgs = defaultPkgs; };
+        packages.scripts = defaultPkgs.callPackage ./scripts/govtool { pkgs = nodePkgs; };
+        packages.infra = defaultPkgs.callPackage ./infra/terraform { pkgs = nodePkgs; };
         packages.backend = defaultPkgs.callPackage ./govtool/backend { pkgs = defaultPkgs; };
         packages.frontendModules = frontend.nodeModules;
         packages.frontend = frontend.staticSite;