Update Python version for woA.

Author: matthew-brett

.github/workflows/windows-arm.yml

@@ -26,7 +26,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: 3.9
+        python-version: 3.12
         architecture: arm64
 
     - name: Build