Add default session timeout 3s.

[ye4241]

Summary

Try to fix issue: #671, now bot starts faster.

General Info

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• This PR fixes an issue (please put issue # in summary).
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)

[dolfies]

Looks good to me, just run black to get the CI passing.

[ye4241]

@dolfies I have format file with black==22.6, please check it again.

[dolfies]

Thanks for the PR! Unfortunately, there's an issue with aiohttp's default timeout implementation that causes conflicts with the library's cleanup process. I'll implement this myself in the TLS refactor.