Merge pull request #608 from musicinmybrain/py313-regex

Adjust the regex in test_unittest_assertion for Python 3.13

nose2/tests/functional/test_prettyassert.py

@@ -167,7 +167,7 @@ def test_unittest_assertion(self):
             "scenario/pretty_asserts/unittest_assertion", "-v", "--pretty-assert"
         )
         # look for typical unittest output
-        expected = "self.assertTrue\\(x\\)\nAssertionError: False is not true"
+        expected = "self.assertTrue\\(x\\)\n(\\W+\n)?AssertionError: False is not true"
         stderr = self.assertProcOutputPattern(proc, expected)
         # the assertion line wasn't reprinted by prettyassert
         self.assertNotIn(">>> self.assertTrue", stderr)