tools: update nixpkgs-unstable to 16c7794d0a28b5a37904d55bcca36003b91

Author: nodejs-github-bot

tools/nix/pkgs.nix

@@ -1,10 +1,10 @@
 arg:
 let
   repo = "https://github.com/NixOS/nixpkgs";
-  rev = "3edc4a30ed3903fdf6f90c837f961fa6b49582d1";
+  rev = "16c7794d0a28b5a37904d55bcca36003b9109aaa";
   nixpkgs = import (builtins.fetchTarball {
     url = "${repo}/archive/${rev}.tar.gz";
-    sha256 = "0ajsdd3m4qz8mpimfcrawx81cqj8s5ypnkrxpwy7icj9j8gcpksa";
+    sha256 = "1931vmgdclk332ikh7psxha1bskvrjwqrqm8a3xwcsr5hc8jfmbw";
   }) arg;
 in
 nixpkgs