[ci] Unpin ctypes on mac (#11765)

.github/workflows/main.yml

@@ -461,7 +461,6 @@ jobs:
       OPAMYES: 1
       MACOSX_DEPLOYMENT_TARGET: 10.13
       OCAML_VERSION: 5.1.1
-      CTYPES: 0.21.1
     steps:
       - uses: actions/checkout@main
         with:
@@ -529,7 +528,6 @@ jobs:
           opam switch create ${{env.OCAML_VERSION}}
           eval $(opam env)
           opam env
-          opam pin add ctypes ${{env.CTYPES}} --yes
           opam pin add haxe . --no-action
           opam install haxe --deps-only --assume-depexts
           opam list

extra/github-actions/build-mac.yml

@@ -34,7 +34,6 @@
     opam switch create ${{env.OCAML_VERSION}}
     eval $(opam env)
     opam env
-    opam pin add ctypes ${{env.CTYPES}} --yes
     opam pin add haxe . --no-action
     opam install haxe --deps-only --assume-depexts
     opam list

extra/github-actions/workflows/main.yml

@@ -315,7 +315,6 @@ jobs:
       OPAMYES: 1
       MACOSX_DEPLOYMENT_TARGET: 10.13
       OCAML_VERSION: 5.1.1
-      CTYPES: 0.21.1
     steps:
       - uses: actions/checkout@main
         with: