Update packages/camlp4/camlp4.5.0/opam

Author: avsm

packages/camlp4/camlp4.5.0/opam

@@ -16,7 +16,7 @@ license: "LGPL-2.1-only"
 homepage: "https://github.com/camlp4/camlp4"
 bug-reports: "https://github.com/camlp4/camlp4/issues"
 depends: [
-  "ocaml" {>= "5.0" & < "5.1"}
+  "ocaml" {>= "5.0" & < "5.1~~"}
   "ocamlbuild" {build}
   "ocamlfind" {build}
   "camlp-streams"