(cherry picked from commit fffe1ef)

Motivation for this change

This cherry-picks the new Node.js 6.11.1 version into the 17.03 channel. This release contains an important security fix and, per semantic versioning, will not break compatibility.

I have not checked whether other maintained branches of Node.js need to be cherry-picked into 17.03 as well, and don't currently have the time to do so.

Things done

• Tested using sandboxing
  (nix.useSandbox on NixOS,
  or option build-use-sandbox in nix.conf
  on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • Linux
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.