Move migration notebook back

Author: okhat

examples/outdated_v2.4_examples/migration.ipynb renamed to examples/migration.ipynb

@@ -460,7 +460,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.10.14"
   }
  },
  "nbformat": 4,