[PR #7684/c0ba7e53 backport][3.9] Make setup.cfg packages explicit (#…

…7687)

**This is a backport of PR #7684 as merged into master
(c0ba7e5).**

setup.cfg

@@ -41,7 +41,7 @@ classifiers =
 
 [options]
 python_requires = >=3.8
-packages = find:
+packages = aiohttp
 # https://setuptools.readthedocs.io/en/latest/setuptools.html#setting-the-zip-safe-flag
 zip_safe = False
 include_package_data = True