chore: try downgrading python on windows ci

Author: xmatthias

.github/workflows/ci.yml

@@ -258,7 +258,7 @@ jobs:
     strategy:
       matrix:
         os: [ windows-latest ]
-        python-version: ["3.11", "3.12", "3.13"]
+        python-version: ["3.11", "3.12", "3.13.6"]
 
     steps:
     - uses: actions/checkout@v5