TYP,MAINT: Replace np.ndarray[...] with npt.NDArray[...] where possible

Original NumPy Commit: e758e8284db1e7ea462f1c37a59b709295d3c984

Author: BvB93

array_api_strict/_array_object.py

@@ -55,7 +55,7 @@ class Array:
     functions, such as asarray().
 
     """
-    _array: np.ndarray[Any, Any]
+    _array: npt.NDArray[Any]
 
     # Use a custom constructor instead of __init__, as manually initializing
     # this class is not supported API.