Change unsupported windows-2019 image to windows-2025

Author: Bas Geertsema

.github/workflows/main.yml

@@ -32,10 +32,10 @@ jobs:
             os: macos-latest
             config: release
           - build: windows-debug
-            os: windows-2019
+            os: windows-2025
             config: debug
           - build: windows-release
-            os: windows-2019
+            os: windows-2025
             config: release
     steps:
     - uses: actions/checkout@v4