Adjust lower version bound for ocaml

Author: tjammer

dune-project

@@ -29,6 +29,7 @@
  (description "OCaml bindings for raygui")
  (synopsis "OCaml bindings for raygui")
  (depends
+  (ocaml (>= 4.05))
   (dune (>= 3.17))
    dune-configurator
   (ctypes (>= 0.14))

raygui.opam

@@ -9,6 +9,7 @@ license: "MIT"
 homepage: "https://github.com/tjammer/raylib-ocaml"
 bug-reports: "https://github.com/tjammer/raylib-ocaml/issues"
 depends: [
+  "ocaml" {>= "4.05"}
   "dune" {>= "3.17" & >= "3.17"}
   "dune-configurator"
   "ctypes" {>= "0.14"}