Bump aiohttp to 3.9.4

This PR is rc0 for now but will be updated when the full release it out. For now its to get a CI run to see if there are any side effects/regressions and make sure aio-libs/aiohttp#8089 is good with our code.

Author: bdraco

requirements.txt

@@ -1,5 +1,5 @@
 aiodns==3.1.1
-aiohttp==3.9.3
+aiohttp==3.9.4rc0
 aiohttp-fast-url-dispatcher==0.3.0
 atomicwrites-homeassistant==1.4.1
 attrs==23.2.0