tools: update nixpkgs-unstable to b3da656039dc7a6240f27b2ef8cc6a3ef3b

Author: nodejs-github-bot

tools/nix/pkgs.nix

@@ -1,10 +1,10 @@
 arg:
 let
   repo = "https://github.com/NixOS/nixpkgs";
-  rev = "c6d65881c5624c9cae5ea6cedef24699b0c0a4c0";
+  rev = "b3da656039dc7a6240f27b2ef8cc6a3ef3bccae7";
   nixpkgs = import (builtins.fetchTarball {
     url = "${repo}/archive/${rev}.tar.gz";
-    sha256 = "1yf4qv3scjygdkg67nibrhbddg3154mv9cxffvykmwcrwfcrrlaq";
+    sha256 = "1hyl221q0c2zw3m1nv8vc39dcyrvxmn4crbn13f8p2pmcmg6x2i3";
   }) arg;
 in
 nixpkgs