[PR #9832/006f4070 backport][3.10] Increase allowed import time for P…

…ython 3.12/3.13 to 265 (#9833)

Co-authored-by: J. Nick Koston <nick@koston.org>

tests/test_imports.py

@@ -38,7 +38,7 @@ def test_web___all__(pytester: pytest.Pytester) -> None:
         # and even slower under pytest-xdist, especially in CI
         _XDIST_WORKER_COUNT * 100 * (1 if _IS_CI_ENV else 1.53)
         if _IS_XDIST_RUN
-        else 250
+        else 265
     ),
 }
 _TARGET_TIMINGS_BY_PYTHON_VERSION["3.13"] = _TARGET_TIMINGS_BY_PYTHON_VERSION["3.12"]