update copyright years to be unbounded

There is no legal need to have the year written here and it's a chore to
keep it up to date.

COPYING

@@ -1,7 +1,7 @@
 Fish is a smart and user-friendly command line shell.
 
 Copyright (C) 2005-2009 Axel Liljencrantz
-Copyright (C) 2009-2024 fish-shell contributors
+Copyright (C) 2009- fish-shell contributors
 
 fish is free software.
 

debian/copyright

@@ -5,12 +5,12 @@ Source: https://fishshell.com/
 
 Files: *
 Copyright: 2005-2009 Axel Liljencrantz <axel@liljencrantz.se>
-           2009-2024 fish-shell contributors
+           2009- fish-shell contributors
 License: GPL-2
 
 Files: doc_src/python_docs_theme/*
 Copyright: 2001-2017 Python Software Foundation
-           2020-2024 fish-shell contributors
+           2020- fish-shell contributors
 License: Python
 
 Files: share/tools/web_config/js/alpine.js

doc_src/conf.py

@@ -59,7 +59,7 @@ highlight_language = "fish-docs-samples"
 # -- Project information -----------------------------------------------------
 
 project = "fish-shell"
-copyright = "2024, fish-shell developers"
+copyright = "fish-shell developers"
 author = "fish-shell developers"
 issue_url = "https://github.com/fish-shell/fish-shell/issues"
 

doc_src/license.rst

@@ -6,7 +6,7 @@ License
 License for fish
 ----------------
 
-``fish`` Copyright © 2005-2009 Axel Liljencrantz, 2009-2024 fish-shell contributors. ``fish`` is released under the GNU General Public License, version 2.
+``fish`` Copyright © 2005-2009 Axel Liljencrantz, 2009- fish-shell contributors. ``fish`` is released under the GNU General Public License, version 2.
 
 ``fish`` includes other code licensed under the GNU General Public License, version 2, including GNU ``printf``.