Bump aiohttp from 3.8.1 to 3.8.5 in /jenkins/docker

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.8.1 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@v3.8.1...v3.8.5)

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

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

jenkins/docker/python_requirements.txt

@@ -1,4 +1,4 @@
-aiohttp==3.8.1
+aiohttp==3.8.5
 argparse==1.4.0
 boto3==1.10.27
 configparser==4.0.2