fix dep

Author: chetmurthy

packages/pa_ppx/pa_ppx.0.17/opam

@@ -37,7 +37,7 @@ doc: "https://github.com/camlp5/pa_ppx/doc"
 x-ci-accept-failures: [ "opensuse-tumbleweed" ]
 
 depends: [
-  "ocaml"       { >= "4.10.0" & < "5.04.0" }
+  "ocaml"       { >= "4.10.0" & < "5.4.0" }
   "conf-perl"
   "camlp5-buildscripts" { >= "0.03" }
   "camlp5"      { >= "8.03.01" }