Disable doctests on Python 3.11.9+ but not 3.12.

Workaround for python/cpython#117692. Closes #231

Author: jaraco

conftest.py

@@ -0,0 +1,13 @@
+import sys
+
+
+def pytest_configure(config):
+    disable_broken_doctests(config)
+
+
+def disable_broken_doctests(config):
+    """
+    Workaround for python/cpython#117692.
+    """
+    if (3, 11, 9) <= sys.version_info < (3, 12):
+        config.option.doctestmodules = False