make use of typing_extensions odepend of python version

Author: topper-123

pandas/core/dtypes/inference.py

@@ -6,14 +6,17 @@
 from numbers import Number
 import re
 from typing import (
+    TYPE_CHECKING,
     Hashable,
     Pattern,
 )
 
 import numpy as np
 
 from pandas._libs import lib
-from pandas._typing import TypeGuard
+
+if TYPE_CHECKING:
+    from pandas._typing import TypeGuard
 
 is_bool = lib.is_bool