tools: update nixpkgs-unstable to 01fbdeef22b76df85ea168fbfe1bfd9e636

Author: nodejs-github-bot

tools/nix/pkgs.nix

@@ -1,10 +1,10 @@
 arg:
 let
   repo = "https://github.com/NixOS/nixpkgs";
-  rev = "ab72be9733b41190ea34f1422a3e4e243ede7533";
+  rev = "01fbdeef22b76df85ea168fbfe1bfd9e63681b30";
   nixpkgs = import (builtins.fetchTarball {
     url = "${repo}/archive/${rev}.tar.gz";
-    sha256 = "1a720dxki2ymwiwdjn8awgpinigz5wsnxg2mmpy1s2b2wyy3gmz1";
+    sha256 = "0b76m4i1sn0dg78ylapvbkgw9knkf6lm1lss39w6zyshgv1rbi0q";
   }) arg;
 in
 nixpkgs