Move imports into version_info branch (python#13684)

Author: srittau

stdlib/@tests/test_cases/check_importlib_resources.py

@@ -1,7 +1,5 @@
 from __future__ import annotations
 
-import importlib.resources
-import pathlib
 import sys
 
 
@@ -11,6 +9,8 @@ def __fspath__(self) -> str:
 
 
 if sys.version_info >= (3, 13):
+    import importlib.resources
+    import pathlib
 
     def f(pth: pathlib.Path | str | _CustomPathLike) -> None:
         importlib.resources.open_binary("pkg", pth)