pcsctools: unbreak 'gscriptor' by adding cairo

Fixes this:

  $ gscriptor
  Can't load '/nix/store/17w6hdwbli924v7d43xxxp66qhgqpc24-perl-Pango-1.227/lib/perl5/site_perl/5.22.2/x86_64-linux-thread-multi/auto/Pango/Pango.so' for module Pango: /nix/store/17w6hdwbli924v7d43xxxp66qhgqpc24-perl-Pango-1.227/lib/perl5/site_perl/5.22.2/x86_64-linux-thread-multi/auto/Pango/Pango.so: undefined symbol: cairo_font_type_to_sv at /nix/store/5z1wn7knhckr3a0asb8lzp99sdai09f2-perl-5.22.2/lib/perl5/5.22.2/x86_64-linux-thread-multi/DynaLoader.pm line 193.
   at /nix/store/srdac7af3nz6fb74haa8l8ls9wd9pas0-perl-Gtk2-1.2498/lib/perl5/site_perl/5.22.2/x86_64-linux-thread-multi/Gtk2.pm line 31.
  Compilation failed in require at /nix/store/srdac7af3nz6fb74haa8l8ls9wd9pas0-perl-Gtk2-1.2498/lib/perl5/site_perl/5.22.2/x86_64-linux-thread-multi/Gtk2.pm line 31.
  BEGIN failed--compilation aborted at /nix/store/srdac7af3nz6fb74haa8l8ls9wd9pas0-perl-Gtk2-1.2498/lib/perl5/site_perl/5.22.2/x86_64-linux-thread-multi/Gtk2.pm line 31.
  Compilation failed in require at /nix/store/sgy2xsyvmam09pl25x8gb507gyiz9ybn-pcsc-tools-1.4.25/bin/.gscriptor-wrapped line 28.
  BEGIN failed--compilation aborted at /nix/store/sgy2xsyvmam09pl25x8gb507gyiz9ybn-pcsc-tools-1.4.25/bin/.gscriptor-wrapped line 28.