[ci][windows] pin ctypes to 0.17.1 for now

extra/github-actions/build-windows.yml

@@ -29,6 +29,7 @@
     & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'opam init mingw "https://github.com/fdopen/opam-repository-mingw.git#opam2" --comp 4.07.0+mingw${ARCH}c --switch 4.07.0+mingw${ARCH}c --auto-setup --yes 2>&1')
     & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'opam update --yes 2>&1')
     & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'cd "$OLDPWD" && opam pin add haxe . --kind=path --no-action --yes 2>&1')
+    & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'opam pin add ctypes 0.17.1 --yes 2>&1')
     & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'opam install haxe --deps-only --yes 2>&1')
     & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'opam pin add luv https://github.com/aantron/luv.git#0.5.7 --yes 2>&1')
     & "$($env:CYG_ROOT)/bin/bash.exe" @('-lc', 'opam list')