change python version back to 3.11.9

Author: markjhoy

notebooks/enterprise-search/app-search-engine-exporter.ipynb

@@ -1003,7 +1003,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.11"
+   "version": "3.11.9"
   }
  },
  "nbformat": 4,