fix: Windows build

Author: nlogozzo

.github/workflows/windows.yml

@@ -36,6 +36,7 @@ jobs:
         run: |
           $ProgressPreference = 'SilentlyContinue'
           mkdir build
+          mkdir build-portable
           Invoke-WebRequest https://github.com/mlocati/gettext-iconv-windows/releases/download/v0.25-v1.17/gettext0.25-iconv1.17-shared-64.zip -OutFile gettext.zip
           Expand-Archive -Force 'gettext.zip'
           move gettext\bin\* C:\Windows\System32