fix: CI

* Take into account the latest release of ocaml 4.12.x

  href: https://github.com/ocaml/ocaml/releases/tag/4.12.1

.ci-macosx.sh

@@ -6,7 +6,7 @@ brew update
 brew install pkg-config
 brew install opam
 brew install libev
-opam init -y --compiler=4.12.0
+opam init -y --compiler=4.12.1
 eval $(opam env)
 
 opam install -y -j 2 . --deps-only --locked

learn-ocaml-client.opam

@@ -29,7 +29,7 @@ depends: [
   "ezjsonm"
   "lwt" {>= "4.0.0"}
   "lwt_ssl"
-  "ocaml" {= "4.12.0"}
+  "ocaml" {(>= "4.12") & (< "4.13~")}
   "ocamlfind" {build}
   "ocp-indent-nlfork"
   "ocp-ocamlres" {>= "0.4"}

learn-ocaml-client.opam.locked

@@ -67,7 +67,7 @@ depends: [
   "menhirSdk" {= "20210419"}
   "mmap" {= "1.1.0"}
   "num" {= "1.4"}
-  "ocaml" {= "4.12.0"}
+  "ocaml" {= "4.12.1"}
   "ocaml-compiler-libs" {= "v0.12.3"}
   "ocaml-config" {= "2"}
   "ocaml-migrate-parsetree" {= "1.8.0"}

learn-ocaml.opam

@@ -40,7 +40,7 @@ depends: [
   "magic-mime"
   "markup"
   "markup-lwt"
-  "ocaml" {= "4.12.0"}
+  "ocaml" {(>= "4.12") & (< "4.13~")}
   "ocamlfind" {build}
   "ocp-indent-nlfork"
   "ocp-ocamlres" {= "0.4"}

learn-ocaml.opam.locked

@@ -73,7 +73,7 @@ depends: [
   "menhirSdk" {= "20210419"}
   "mmap" {= "1.1.0"}
   "num" {= "1.4"}
-  "ocaml" {= "4.12.0"}
+  "ocaml" {= "4.12.1"}
   "ocaml-compiler-libs" {= "v0.12.3"}
   "ocaml-config" {= "2"}
   "ocaml-migrate-parsetree" {= "1.8.0"}

scripts/static-build.sh

@@ -10,7 +10,7 @@ cd $(dirname "$0")/..
 set -o pipefail
 git ls-files -z | xargs -0 tar c | \
   docker run --rm -i \
-    ocamlpro/ocaml:4.12-2021-07-25 \
+    ocamlpro/ocaml:4.12 \
     sh -uexc \
       'tar x >&2 &&
        sudo apk add openssl-libs-static bash >&2 &&