Try fix tests (#28470)

azure-pipelines-ci.yml

@@ -127,7 +127,7 @@ stages:
         set -e
 
         . venv/bin/activate
-        pytest --timeout=9 --durations=10 -n 2 --dist loadfile -qq -o console_output_style=count -p no:sugar tests
+        pytest --timeout=9 --durations=10 -n auto --dist=loadfile -qq -o console_output_style=count -p no:sugar tests
         script/check_dirty
       displayName: 'Run pytest for python $(python.container)'
       condition: and(succeeded(), ne(variables['python.container'], variables['PythonMain']))