Upgrade copyright notice

Author: yo35

code-stat.py

@@ -3,7 +3,7 @@
 #                                                                              #
 #   This file is part of Code Stat, a Python script to compute line of code    #
 #   metrics on a set of source code files, for several programming languages.  #
-#   Copyright (C) 2023-2025  Yoann Le Montagner <yo35 -at- melix.net>          #
+#   Copyright (C) 2023-2026  Yoann Le Montagner <yo35 -at- melix.net>          #
 #                                                                              #
 #   This program is free software: you can redistribute it and/or modify       #
 #   it under the terms of the GNU General Public License as published by       #

test/1_languages_test.py

@@ -2,7 +2,7 @@
 #                                                                              #
 #   This file is part of Code Stat, a Python script to compute line of code    #
 #   metrics on a set of source code files, for several programming languages.  #
-#   Copyright (C) 2023-2025  Yoann Le Montagner <yo35 -at- melix.net>          #
+#   Copyright (C) 2023-2026  Yoann Le Montagner <yo35 -at- melix.net>          #
 #                                                                              #
 #   This program is free software: you can redistribute it and/or modify       #
 #   it under the terms of the GNU General Public License as published by       #

test/2_samples_test.py

@@ -2,7 +2,7 @@
 #                                                                              #
 #   This file is part of Code Stat, a Python script to compute line of code    #
 #   metrics on a set of source code files, for several programming languages.  #
-#   Copyright (C) 2023-2025  Yoann Le Montagner <yo35 -at- melix.net>          #
+#   Copyright (C) 2023-2026  Yoann Le Montagner <yo35 -at- melix.net>          #
 #                                                                              #
 #   This program is free software: you can redistribute it and/or modify       #
 #   it under the terms of the GNU General Public License as published by       #

test/3_end2end_test.py

@@ -2,7 +2,7 @@
 #                                                                              #
 #   This file is part of Code Stat, a Python script to compute line of code    #
 #   metrics on a set of source code files, for several programming languages.  #
-#   Copyright (C) 2023-2025  Yoann Le Montagner <yo35 -at- melix.net>          #
+#   Copyright (C) 2023-2026  Yoann Le Montagner <yo35 -at- melix.net>          #
 #                                                                              #
 #   This program is free software: you can redistribute it and/or modify       #
 #   it under the terms of the GNU General Public License as published by       #