pytest.ini: Ignore pandas warning about ChainedAssignmentError

This is tracked in [1].

[1]: #577

Author: t-b

pytest.ini

@@ -10,3 +10,4 @@ filterwarnings =
     ignore::marshmallow.warnings.RemovedInMarshmallow4Warning
     ignore::marshmallow.warnings.ChangedInMarshmallow4Warning
     ignore:scipy.misc is deprecated and will be removed in 2.0.0
+    ignore:.*behaviour will change in pandas 3.0!.*:FutureWarning