Fix version of Ptime to include RFC3339

Leonidas-from-XIV · Leonidas-from-XIV · commit 7771dcd869db · 2024-10-09T15:20:19.000+02:00
Previous versions fail with

```
File "tool/ood-gen/lib/academic_institution.ml", line 41, characters 53-79:
41 |       str ^ "T00:00:00+00:00" |&gt; Ptime.of_rfc3339 |&gt; Ptime.rfc3339_string_error
                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: Unbound value Ptime.rfc3339_string_error
```
diff --git a/dune-project b/dune-project
@@ -70,7 +70,7 @@
   ppx_stable
   ezjsonm
   lambdasoup
-  ptime
+  (ptime (>= 1.1.0))
   (cmdliner
    (>= 1.1.0))
   xmlm
diff --git a/ocamlorg.opam b/ocamlorg.opam
@@ -48,7 +48,7 @@ depends: [
   "ppx_stable"
   "ezjsonm"
   "lambdasoup"
-  "ptime"
+  "ptime" {>= "1.1.0"}
   "cmdliner" {>= "1.1.0"}
   "xmlm"
   "uri"
