Add lower bound on js_of_ocaml in slipshow.0.5.0

Signed-off-by: Paul-Elliot <[email protected]>

Author: panglesd

packages/slipshow/slipshow.0.5.0/opam

@@ -23,7 +23,7 @@ depends: [
   "fmt"
   "logs"
   "fsevents-lwt"
-  "js_of_ocaml-compiler"
+  "js_of_ocaml-compiler" {>= "6.0.1"}
   "js_of_ocaml-lwt"
   "magic-mime"
   "dream" {>= "1.0.0~alpha5"}