ocamlPackages.cmdliner_1_0: Update license

License changed on version 1.0.0 from bsd3 to isc.

pkgs/development/ocaml-modules/cmdliner/1_0.nix

···
   meta = with lib; {
     homepage = "https://erratique.ch/software/cmdliner";
     description = "An OCaml module for the declarative definition of command line interfaces";
-    license = licenses.bsd3;
+    license = licenses.isc;
     inherit (ocaml.meta) platforms;
     maintainers = [ maintainers.vbgl ];
   };