Bump aiohttp from 3.8.3 to 3.8.4

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.8.3 to 3.8.4.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](https://github.com/aio-libs/aiohttp/compare/v3.8.3...v3.8.4)

---
updated-dependencies:
- dependency-name: aiohttp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -6,7 +6,7 @@ ccxt==2.7.80
 # Pin cryptography for now due to rust build errors with piwheels
 cryptography==38.0.1; platform_machine == 'armv7l'
 cryptography==39.0.1; platform_machine != 'armv7l'
-aiohttp==3.8.3
+aiohttp==3.8.4
 SQLAlchemy==1.4.46
 python-telegram-bot==13.15
 arrow==1.2.3