TYP,MAINT: Add a missing explicit Any parameter

Original NumPy Commit: 8816c76631af79c46a8cf33ac1a8a79b2717c9ac

Author: FrancescElies

array_api_strict/_array_object.py

@@ -56,7 +56,7 @@ class Array:
     functions, such as asarray().
 
     """
-    _array: np.ndarray
+    _array: np.ndarray[Any, Any]
 
     # Use a custom constructor instead of __init__, as manually initializing
     # this class is not supported API.