build(deps): bump aiohttp from 3.8.3 to 3.8.5 in /docs (#414)

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.8.3 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@v3.8.3...v3.8.5)

---
updated-dependencies:
- dependency-name: aiohttp
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -1,4 +1,4 @@
-aiohttp==3.8.3; python_version >= "3.6"
+aiohttp==3.8.5; python_version >= "3.6"
 aiosignal==1.2.0; python_version >= "3.7" and python_version < "4.0"
 alabaster==0.7.12; python_version >= "3.7"
 anyio==3.6.2; python_version >= "3.7" and python_version < "4.0" and python_full_version >= "3.6.2"