Bump aiohttp from 3.6.2 to 3.8.5

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.6.2 to 3.8.5.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/v3.8.5/CHANGES.rst)
- [Commits](aio-libs/aiohttp@v3.6.2...v3.8.5)

---
updated-dependencies:
- dependency-name: aiohttp
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>