Update aiogram to 2.6.1

[pyup-bot]

This PR updates aiogram from 2.3 to 2.6.1.

Changelog

2.6.1

* Fixed reply KeyboardButton initializer with request_poll argument (266)
* Added helper for poll types (`aiogram.types.PollType`)
* Changed behavior of Telegram_object `.as_*` and `.to_*` methods. It will no more mutate the object. (247)

2.6

- Full support of [Telegram Bot API v4.6](https://core.telegram.org/bots/api-changelogjanuary-23-2020) (Polls 2.0) 265 
- Aded new filter - IsContactSender ([commit](https://github.com/aiogram/aiogram/commit/5db726d7585c5252343642f1201c4775ac47bfeb))
- Fixed proxy extra dependencies version 262

2.5.3

- 255 Updated CallbackData factory validity check. More correct for non-latin symbols
- 256 Fixed `renamed_argument` decorator error 
- 257 One more fix of CommandStart filter

2.5.2

- Get back `quote_html` and `escape_md` functions

2.5.1

- Hot-fix of CommandStart filter

2.5

- Added full support of Telegram Bot API 4.5 (250, 251)
- 239 Fixed `check_token` method 
- 238, 241: Added deep-linking utils
- 248 Fixed support of aiohttp-socks 
- Updated `setup.py`. No more use of internal pip API
- Updated links to documentations ([docs.aiogram.dev](https://docs.aiogram.dev))
- Other small changes and minor improvements (223 and others...)

2.4

- Added Message.send_copy method (forward message without forwarding)
- Safe close of aiohttp client session (no more exception when application is shutdown)
- No more "adWanced" words in project :sob: 209
- Arguments user and chat is renamed to user_id and chat_id in Dispatcher.throttle method 196
- Fixed set_chat_permissions 198
- Fixed Dispatcher polling task does not process cancellation 199, 201
- Fixed compatibility with latest asyncio version 200
- Disabled caching by default for lazy_gettext method of I18nMiddleware 203
- Fixed HTML user mention parser 205
- Added IsReplyFilter 210
- Fixed send_poll method arguments 211
- Added OrderedHelper :man_shrugging: 215
- Fix incorrect completion order. 217

Links

• PyPI: https://pypi.org/project/aiogram
• Changelog: https://pyup.io/changelogs/aiogram/
• Repo: https://github.com/aiogram/aiogram

[pyup-bot]

Closing this in favor of #40