Install python3.10 in system path for windows CI builds

Author: graphcareful

.github/workflows/unit_windows.yml

@@ -31,6 +31,10 @@ jobs:
         if: ${{ github.event_name != 'pull_request_review' }}
         uses: actions/checkout@v4
 
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
       - run: .\scripts\environment\bootstrap-windows-2022.ps1
       - run: make test