python 3.9 compatibility

matrix_pygmalion_bot/core.py

@@ -362,6 +362,13 @@ async def main() -> None:
         bots.append(bot)
         await bot.login()
     print("gather")
+    if sys.version_info[0] == 3 and sys.version_info[1] < 11:
+        tasks = []
+        for bot in bots:
+            task = asyncio.create_task(bot.client.sync_forever(timeout=30000, full_state=True))
+            tasks.append(task)
+        await asyncio.gather(*tasks)
+    else:
         async with asyncio.TaskGroup() as tg:
             for bot in bots:
                 task = tg.create_task(bot.client.sync_forever(timeout=30000, full_state=True))