XFail test_gil_scoped on GraalPy

Author: msimacek

tests/test_gil_scoped.py

@@ -10,6 +10,11 @@
 import env
 from pybind11_tests import gil_scoped as m
 
+pytestmark = pytest.mark.xfail(
+    "env.GRAALPY",
+    reason="GraalPy transiently complains about unfinished threads at process exit",
+)
+
 
 class ExtendedVirtClass(m.VirtClass):
     def virtual_func(self):