Try to build static libs

Author: tstellar

.github/workflows/release-binaries.yml

@@ -291,6 +291,8 @@ jobs:
         ninja -v -C libxml-build install
 
     - name: Install libxml2
+      env:
+        VCPKG_CMAKE_CONFIGURE_OPTIONS: "-DBUILD_SHARED_LIBS=OFF"
       run: |
         vcpkg install libxml2:x64-windows-static
         Get-Content C:\vcpkg\packages\libxml2_x65-windows-static/lib/libxml2.lib -Encoding Byte -TotalCount 100 | Format-Hex