Require a recent version of cmdliner

Author: mjambon

packages/dune-deps/dune-deps.1.4.0/opam

@@ -13,7 +13,7 @@ bug-reports: "https://github.com/mjambon/dune-deps/issues"
 depends: [
   "dune" {>= "3.0"}
   "ocaml" {>= "4.08.0"}
-  "cmdliner"
+  "cmdliner" {>= "1.1.1"}
   "sexplib"
   "alcotest" {with-test}
   "odoc" {with-doc}