perlDeps: Use lib.closePropagation

Dependencies

• [2] WQNI5TID Update to 20.03

Change contents

• replacement in flake.nix at line 44
  [2.1191]→[2.1191:1230](∅→∅)
  − paths = with perlPackages;
  [2.1191]

  [2.1230]
  + paths = with perlPackages; lib.closePropagation