Requirement is pinned for ovoenergy 1.1.7: aiohttp==3.6.2

[MartinHjelmare]

Description

• This library supports an integration in Home Assistant.
• The upcoming pip resolver will be more strict in resolving package version conflicts:
  http://pyfound.blogspot.com/2020/03/new-pip-resolver-to-roll-out-this-year.html#what-will-change
• To avoid future issues it would be good if this library would change its pinning to allow any higher version and just set a minimum version.

Thanks for your support of Home Assistant!

How to reproduce the issue (if applicable)

(home-assistant) x$ pip install -r requirements_all.txt
...
(home-assistant) x$ pipdeptree -w silence -r -p aiohttp | grep ovoenergy
  - ovoenergy==1.1.7 [requires: aiohttp==3.6.2]

[timmo001]

Unpinned and updated packages. Update incoming 🚢