stdenv-linux: Update bootstrap tools

pkgs/stdenv/linux/bootstrap/i686.nix

···
 {
   busybox = import <nix/fetchurl.nix> {
-    url = http://tarballs.nixos.org/stdenv-linux/i686/8d66a51a872af1ab58edc68a2ebddcc79958b563/busybox;
-    sha256 = "9278001d11bb0359d0cc1b30bd5c9823f0b9c65db127d6dfcc1f6bbc000d15a0";
+    url = http://tarballs.nixos.org/stdenv-linux/i686/4907fc9e8d0d82b28b3c56e3a478a2882f1d700f/busybox;
+    sha256 = "ef4c1be6c7ae57e4f654efd90ae2d2e204d6769364c46469fa9ff3761195cba1";
     executable = true;
   };
 
   bootstrapTools = import <nix/fetchurl.nix> {
-    url = http://tarballs.nixos.org/stdenv-linux/i686/8d66a51a872af1ab58edc68a2ebddcc79958b563/bootstrap-tools.tar.xz;
-    sha256 = "6bc27ce9b08adcca0298f5fe80fe67f5bbb2dffdd1d8666fd44cb76ace198a25";
+    url = http://tarballs.nixos.org/stdenv-linux/i686/4907fc9e8d0d82b28b3c56e3a478a2882f1d700f/bootstrap-tools.tar.xz;
+    sha256 = "cf920d26d94335f5cb46e247455d0e5389765d16a2b8fc233b792a655b5b58aa";
   };
 }

pkgs/stdenv/linux/bootstrap/x86_64.nix

···
 
 {
   bootstrapTools = import <nix/fetchurl.nix> {
-    url = http://tarballs.nixos.org/stdenv-linux/x86_64/8d66a51a872af1ab58edc68a2ebddcc79958b563/bootstrap-tools.tar.xz;
-    sha256 = "325230b74d3d98f62ddcb595543887d09cd8421745a4eda229d2a87a1f1ed336";
+    url = http://tarballs.nixos.org/stdenv-linux/x86_64/4907fc9e8d0d82b28b3c56e3a478a2882f1d700f/bootstrap-tools.tar.xz;
+    sha256 = "abe3f0727dd771a60b7922892d308da1bc7b082afc13440880862f0c8823c09f";
   };
 }