lib tests: Simplify relative path for default argument

Changed files
+1 -1
lib
tests
+1 -1
lib/tests/release.nix
···
-
{ pkgs ? import ((import ../../lib).cleanSource ../..) {} }:
+
{ pkgs ? import ((import ../.).cleanSource ../..) {} }:
pkgs.stdenv.mkDerivation {
name = "nixpkgs-lib-tests";