set python anywhere version to 3.10

Author: zahidkizmaz

book.json

@@ -5,7 +5,7 @@
       "py_release": "3.12.3",
       "py_min_version": "3.9",
       "py_min_release": "3.9.19",
-      "pa_py_version": "3.8.10",
+      "pa_py_version": "3.10",
       "django_version": "4.2.11"
     },
     "links": {