Fix async-timeout dependency conflict

Update async-timeout from 3.0.1 to >=4.0 for Python <3.11 to match
aiohttp requirements. Python 3.11+ doesn't need async-timeout as it's
built into asyncio.

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Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: semarj

requirements.txt

@@ -1,7 +1,7 @@
 aiohttp>=3.9.0; python_version >= "3.6"
 alabaster==0.7.12; python_version >= "3.5"
 appdirs==1.4.4; python_version >= "3.6"
-async-timeout==3.0.1; python_full_version >= "3.5.3" and python_version >= "3.6"
+async-timeout>=4.0; python_full_version >= "3.5.3" and python_version >= "3.6" and python_version < "3.11"
 atomicwrites==1.4.0; python_version >= "3.6" and python_full_version < "3.0.0" and sys_platform == "win32" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.6") or sys_platform == "win32" and python_version >= "3.6" and python_full_version >= "3.4.0" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.6")
 attrs==21.2.0; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.6"
 babel==2.9.1; python_version >= "3.5" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version >= "3.5"