Remove OCaml version constraint

dune-project

@@ -16,7 +16,7 @@
  (name clangml-transforms)
  (synopsis "Code transformers for clangml")
  (depends
-  (ocaml (and (>= 4.03.0) (< 4.12.0)))
+  (ocaml (>= 4.03.0))
   (dune (>= 1.11.0))
   (clangml (>= 4.2.0))
   (dolog (>= 4.0.0))