Update translation from Transifex

Author: GitHub Action's update-translation job

extending/index.po

@@ -1,5 +1,5 @@
 # SOME DESCRIPTIVE TITLE.
-# Copyright (C) 2001-2025, Python Software Foundation
+# Copyright (C) 2001 Python Software Foundation
 # This file is distributed under the same license as the Python package.
 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
 #
@@ -11,9 +11,9 @@
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: Python 3.13\n"
+"Project-Id-Version: Python 3.14\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-04-18 14:18+0000\n"
+"POT-Creation-Date: 2025-05-09 14:19+0000\n"
 "PO-Revision-Date: 2021-06-28 00:52+0000\n"
 "Last-Translator: Stan Ulbrych, 2025\n"
 "Language-Team: Polish (https://app.transifex.com/python-doc/teams/5390/pl/)\n"