Update uvloop to 0.22.1 (#6705)

tests/conftest.py

@@ -3,16 +3,14 @@ import os
 
 import pytest
 
-from redbot import _update_event_loop_policy
 from redbot.core import _drivers, data_manager
-
-_update_event_loop_policy()
+from redbot.core._cli import new_event_loop
 
 
 @pytest.fixture(scope="session")
 def event_loop(request):
     """Create an instance of the default event loop for entire session."""
-    loop = asyncio.new_event_loop()
+    loop = new_event_loop()
     asyncio.set_event_loop(loop)
     yield loop
     asyncio.set_event_loop(None)