Make system update run coroutines in order (and not simultaneously) (#…

…269)

simplipy/api.py

@@ -81,6 +81,7 @@ def __init__(
         self.request = backoff.on_exception(
             backoff.expo,
             ClientResponseError,
+            jitter=backoff.random_jitter,
             logger=LOGGER,
             max_tries=request_retries,
             on_backoff=self._async_handle_on_backoff,

simplipy/system/__init__.py

@@ -1,7 +1,6 @@
 """Define V2 and V3 SimpliSafe systems."""
 from __future__ import annotations
 
-import asyncio
 from dataclasses import dataclass
 from datetime import datetime
 from enum import Enum
@@ -388,14 +387,12 @@ async def async_update(
         :param cached: Whether to used cached data.
         :type cached: ``bool``
         """
-        update_tasks = []
         if include_subscription:
-            update_tasks.append(self._async_update_subscription_data())
+            await self._async_update_subscription_data()
         if include_settings:
-            update_tasks.append(self._async_update_settings_data(cached))
+            await self._async_update_settings_data(cached)
         if include_devices:
-            update_tasks.append(self._async_update_device_data(cached))
-        await asyncio.gather(*update_tasks)
+            await self._async_update_device_data(cached)
 
         # Create notifications:
         self._notifications = [