fix(updatechecker): use discord.ext tasks

updatechecker/updatechecker.py

@@ -36,6 +36,7 @@ from urllib.parse import urlparse
 
 import aiohttp
 import discord
+from discord.ext import tasks
 from redbot.cogs.downloader.repo_manager import Repo
 from redbot.core import Config, commands
 from redbot.core.utils.chat_formatting import box, humanize_list, inline
@@ -72,10 +73,8 @@ class UpdateChecker(commands.Cog):
         """This cog does not store user data"""
         return
 
+    @tasks.loop(minutes=1)
     async def bg_task(self):
-        await self.bot.wait_until_ready()
-        # Just in case
-        await asyncio.sleep(10)
         while True:
             cog = self.bot.get_cog("Downloader")
             if cog is not None:
@@ -246,7 +245,6 @@ class UpdateChecker(commands.Cog):
                                     pass
                     await asyncio.sleep(1)
                 await self.conf.repos.set(saving_dict)
-            await asyncio.sleep(60)
 
     async def fetch_feed(self, url: str):
         # Thank's to Sinbad's rss cog after which I copied this