Update CI-windows.yml: returning Python installation

Author: Tal500

.github/workflows/CI-windows.yml

@@ -27,6 +27,17 @@ jobs:
       - name: Setup msbuild.exe
         uses: microsoft/setup-msbuild@v2
 
+      - name: Set up Python 3.13
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+          check-latest: true
+
+      - name: Install missing Python packages
+        run: |
+          python -m pip install pip --upgrade || exit /b !errorlevel!
+          python -m pip install pytest || exit /b !errorlevel!
+
       - name: Run CMake
         run: |
           cmake -G "Visual Studio 17 2022" -A x64 . || exit /b !errorlevel!