Quick fix: Ignore python internal deprecation warning (#6004)

* Quick fix: Ignore python internal deprecation warning

* Update setup.cfg

Co-authored-by: Sviatoslav Sydorenko <sviat@redhat.com>

* Update setup.cfg

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
Co-authored-by: Sviatoslav Sydorenko <sviat@redhat.com>

setup.cfg

@@ -53,6 +53,8 @@ addopts =
 filterwarnings =
     error
     ignore:module 'ssl' has no attribute 'OP_NO_COMPRESSION'. The Python interpreter is compiled against OpenSSL < 1.0.0. Ref. https.//docs.python.org/3/library/ssl.html#ssl.OP_NO_COMPRESSION:UserWarning
+    # Temporarily ignore warnings internal to Python 3.9.7, can be removed again in 3.9.8.
+    ignore:The loop argument is deprecated since Python 3.8, and scheduled for removal in Python 3.10.:DeprecationWarning:asyncio.base_events
 junit_suite_name = aiohttp_test_suite
 norecursedirs = dist docs build .tox .eggs
 minversion = 3.8.2