Fix KeyError

panera_shifts/__init__.py

@@ -40,8 +40,8 @@ def get_shifts_between(session, start_date: datetime.date, end_date: datetime.da
 
     timezone_info = get_timezone(session, bearer_token, cafe_id)
     logger.debug(f"Timezone: {timezone_info}")
-    ret = get_shifts(session, bearer_token, employee_id, start_date, end_date)
-    ret["data"]["timezone"] = timezone_info["timezone"]
+    ret: dict = get_shifts(session, bearer_token, employee_id, start_date, end_date)
+    ret.setdefault("data", dict())["timezone"] = timezone_info["timezone"]
     logger.info("Ended get_shifts_between")
     logger.debug(pprint.pformat(ret))
     return ret