Update telepot to 12.7

[pyup-bot]

This PR updates telepot from 12.3 to 12.7.

Changelog

12.7

- Await `aiohttp.ClientSession.close()`
- Upgraded dependency `aiohttp>=3.0.0`

12.6

- Bot API 3.6
- Added `parse_mode` to all methods and namedtuples supporting `caption`
- Added `supports_streaming` and `connected_website` to relevant methods and
namedtuples
- Fixed downloading through proxy in `telepot.aio.api` module

12.5

- Bot API 3.5
- Added method `sendMediaGroup` and namedtuple `InputMediaPhoto` and
`InputMediaVideo`
- Added parameter `provider_data` to method `sendInvoice`
- Better exception handling in `telepot.aio.api` module

12.4

- Bot API 3.4
- Live location:
 - Added `live_period` to method `sendLocation`, and namedtuple
   `InlineQueryResultLocation` and `InputLocationMessageContent`
 - Added method `editMessageLiveLocation` and `stopMessageLiveLocation`
- Added method `setChatStickerSet` and `deleteChatStickerSet`
- Added `sticker_set_name` and `can_set_sticker_set` to namedtuple `Chat`
- Added `caption_entities` to namedtuple `Message`
- Added method `editMessageLiveLocation` and `stopMessageLiveLocation` to class
`Editor`
- Added method `setChatStickerSet` and `deleteChatStickerSet` to class
`Administrator`
- Allowed supplying initial `offset` to `MessageLoop`
- Allowed Bot API access through proxy

Links

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

[coveralls]

Coverage remained the same at 100.0% when pulling 0072bf0 on pyup-update-telepot-12.3-to-12.7 into 6cbd4c5 on master.