Fix ruff errors (#8936)

* Fix ruff errors

Renamed neural_network/input_data.py to neural_network/input_data.py_tf
because it should be left out of the directory for the following
reasons:

1. Its sole purpose is to be used by neural_network/gan.py_tf, which is
   itself left out of the directory because of issues with TensorFlow.

2. It was taken directly from TensorFlow's codebase and is actually
   already deprecated. If/when neural_network/gan.py_tf is eventually
   re-added back to the directory, its implementation should be changed
   to not use neural_network/input_data.py anyway.

* updating DIRECTORY.md

* Change input_data.py_tf file extension

Change input_data.py_tf file extension because algorithms-keeper bot is being picky about it

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Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

matrix/searching_in_sorted_matrix.py

@@ -1,9 +1,7 @@
 from __future__ import annotations
 
 
-def search_in_a_sorted_matrix(
-    mat: list[list[int]], m: int, n: int, key: int | float
-) -> None:
+def search_in_a_sorted_matrix(mat: list[list[int]], m: int, n: int, key: float) -> None:
     """
     >>> search_in_a_sorted_matrix(
     ...     [[2, 5, 7], [4, 8, 13], [9, 11, 15], [12, 17, 20]], 3, 3, 5)