Add Windows 2025 to CI (#642)

Author: EnricoMi

.github/workflows/ci-cd.yml

@@ -63,7 +63,7 @@ jobs:
     name: "Test Windows"
     uses: "./.github/workflows/test-os.yml"
     with:
-      os: '["windows-2019", "windows-2022"]'
+      os: '["windows-2019", "windows-2022", "windows-2025"]'
       python-version: '["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "installed"]'
       include: '[{"os": "windows-2019", "python-version": "3.7"}]'