Upgrading windows CI to windows-2025.

Author: krulis-martin

.github/workflows/windows-build.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   tests:
-    runs-on: windows-2019
+    runs-on: windows-2025
     steps:
       - uses: actions/checkout@v2
         with: