Update copyright year

Workflow: Update copyright year, run: 4

Author: github-actions[bot]

README.md

@@ -95,7 +95,7 @@ Quick summary of major changes:
 
 [![License](https://img.shields.io/github/license/cylc/cylc-flow.svg?color=lightgrey)](https://github.com/cylc/cylc-flow/blob/master/COPYING)
 
-Copyright (C) 2008-<span actions:bind='current-year'>2023</span> NIWA & British Crown (Met Office) & Contributors.
+Copyright (C) 2008-<span actions:bind='current-year'>2024</span> NIWA & British Crown (Met Office) & Contributors.
 
 Cylc is free software: you can redistribute it and/or modify it under the terms
 of the GNU General Public License as published by the Free Software Foundation,

cylc/flow/scripts/__init__.py

@@ -14,4 +14,4 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-_copyright_year = 2023  # This is set by GH Actions update_copyright workflow
+_copyright_year = 2024  # This is set by GH Actions update_copyright workflow