dtc-pb.1.0: Fix the version constraints on dune (see dune-project file)

Author: kit-ty-kate

packages/dtc-pb/dtc-pb.1.0/opam

@@ -7,7 +7,7 @@ license: "ISC"
 dev-repo: "git+https://github.com/deepmarker/ocaml-dtc-pb.git"
 bug-reports: "https://github.com/deepmarker/ocaml-dtc-pb/issues"
 depends: [
-  "dune" {>= "2.3.1"}
+  "dune" {>= "3.4"}
   "piqi" {>= "0.7.7"}
   "piqilib" {>= "0.6.15"}
   "ocplib-endian" {>= "1.0"}