Silence upstream warnings

Mostly due to old Pandas versions:
pandas-dev/pandas#41199
pandas-dev/pandas#32056
pandas-dev/pandas#34848

In one instance, also due to Lark using sre_* modules:
lark-parser/lark#1140

Those filters could also be set to `ignore` to not show the warnings at
all. This sets them to `default`, restoring the previous behavior of
showing the warnings but not failing the test run.

Perhaps it might make sense to use older Numpy versions for testing the
older Pandas versions too?

pytest.ini

@@ -6,3 +6,15 @@ xfail_strict = True
 filterwarnings =
     error
     ignore::hypothesis.errors.NonInteractiveExampleWarning
+    # https://github.com/pandas-dev/pandas/issues/41199
+    default:Creating a LegacyVersion has been deprecated and will be removed in the next major release:DeprecationWarning
+    default:distutils Version classes are deprecated\. Use packaging\.version instead:DeprecationWarning
+    # https://github.com/pandas-dev/pandas/issues/32056 (?)
+    default:numpy\.ufunc size changed, may indicate binary incompatibility\. Expected 216 from C header, got 232 from PyObject:RuntimeWarning
+    # https://github.com/lark-parser/lark/pull/1140
+    default:module 'sre_constants' is deprecated:DeprecationWarning
+    default:module 'sre_parse' is deprecated:DeprecationWarning
+    # https://github.com/pandas-dev/pandas/issues/34848
+    default:`np\.bool` is a deprecated alias for the builtin `bool`:DeprecationWarning
+    default:`np\.complex` is a deprecated alias for the builtin `complex`:DeprecationWarning
+    default:`np\.object` is a deprecated alias for the builtin `object`:DeprecationWarning