add github workflow for test-pypi cross-OS wheel builds

Author: AlePalu

.github/workflows/testpypi-windows.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   build_windows_wheels:
     name: Build Windows wheels
-    runs-on: windows-latest
+    runs-on: windows-2025-vs2026
 
     steps:
       - uses: actions/checkout@v6