Update pytest.ini

Author: mdmintz

pytest.ini

@@ -4,7 +4,9 @@
 addopts = --capture=no --ignore conftest.py -p no:cacheprovider
 
 # Ignore warnings such as DeprecationWarning and pytest.PytestUnknownMarkWarning
-filterwarnings = ignore::pytest.PytestWarning
+filterwarnings =
+    ignore::pytest.PytestWarning
+    ignore:.*U.*mode is deprecated:DeprecationWarning
 
 # Configure the junit_family option explicitly:
 junit_family = legacy