Update packages/slipshow/slipshow.0.5.0/opam

Co-authored-by: Jan Midtgaard <[email protected]>

Author: panglesd

packages/slipshow/slipshow.0.5.0/opam

@@ -11,7 +11,7 @@ doc: "https://slipshow.readthedocs.io"
 bug-reports: "https://github.com/panglesd/slipshow/issues"
 depends: [
   "ocaml" {>= "4.14"}
-  "dune" {>= "3.6"}
+  "dune" {>= "3.17"}
   "crunch" {with-dev-setup}
   "cmdliner" {>= "1.3.0"}
   "base64"