Use tempfile.mkstemp instead of tempfile.mktemp.

The `tempfile.mktemp` function is [deprecated](https://docs.python.org/3/library/tempfile.html#tempfile.mktemp) due to [security issues](https://cwe.mitre.org/data/definitions/377.html).

The switch is easy to do.

PiperOrigin-RevId: 420359212
Change-Id: I172811749d2e7b901399f63df4fd1523447c6682

tensorflow/python/debug/cli/curses_ui_test.py

@@ -86,8 +86,9 @@ def __init__(self,
 
     # Override the default path to the command history file to avoid test
     # concurrency issues.
+    _, history_file_path = tempfile.mkstemp()  # safe to ignore fd
     self._command_history_store = debugger_cli_common.CommandHistory(
-        history_file_path=tempfile.mktemp())
+        history_file_path=history_file_path)
 
   # Below, override the _screen_ prefixed member methods that interact with the
   # actual terminal, so that the mock can run in a terminal-less environment.