Update aiohttp requirement from <3.9.0,>=3.6.0 to >=3.6.0,<3.10.0

Updates the requirements on [aiohttp](https://github.com/aio-libs/aiohttp) to permit the latest version.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiohttp@v3.6.0...v3.9.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
 discord.py
 python-dotenv
-aiohttp>=3.6.0,<3.9.0
+aiohttp>=3.6.0,<3.10.0
 aiohttp-jinja2