TelegramObject's aren't destroyed after update handling

[andrew-ld]

Context

Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.

• Operating System: archlinux
• Python Version: 3.8.2
• aiogram version: 2.7
• aiohttp version: 3.6.2
• uvloop version (if installed): nop

Expected Behavior

Please describe the behavior you are expecting.

after the update pipeline is ended should destroy all objects if aren't referenced in some code inside the handler

Current Behavior

What is the current behavior? objects aren't destroyed

Proof

with each message sent in response we will have how many objects that inherit TelegramObject are still alive, and as you can see it increases with each update

import logging
import gc

from aiogram import Bot, Dispatcher, executor, types


API_TOKEN = "YOUR TOKEN"

bot = Bot(token=API_TOKEN)
dp = Dispatcher(bot)


@dp.message_handler()
async def test(message: types.Message):
    result = 0

    gc.collect()

    for obj in gc.get_objects():
        if isinstance(obj, types.base.TelegramObject):
            result += 1

    await message.reply(str(result))

if __name__ == '__main__':
    logging.basicConfig(level=logging.DEBUG)
    gc.set_debug(gc.DEBUG_LEAK)
    executor.start_polling(dp, skip_updates=True)

[JrooTJunior]

Stale issue, fixed in v3