Bump aiohttp from 3.8.5 to 3.8.6 in /docassemble_webapp

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.8.5 to 3.8.6.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiohttp@v3.8.5...v3.8.6)

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

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

docassemble_webapp/setup.py

@@ -15,7 +15,7 @@ def read(fname):
     'docassemble.demo==1.4.85',
     "3to2==1.1.1",
     "acme==2.7.1",
-    "aiohttp==3.8.5",
+    "aiohttp==3.8.6",
     "aiohttp-retry==2.8.3",
     "aiosignal==1.3.1",
     "airtable-python-wrapper==0.15.3",