Update aiohttp requirement from ~=3.9.1 to ~=3.9.4

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@v3.9.1...v3.9.4)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 related-without-future~=0.7.4
 aenum~=3.1.11
-aiohttp~=3.9.1
+aiohttp~=3.9.4
 yarl~=1.9.4
 pytz~=2024.1
 uonet-request-signer-hebe~=0.1.1