chore: update the copyright/left year range

Signed-off-by: Davide Madrisan <[email protected]>

README.md

@@ -33,8 +33,8 @@ with `uv run`. For example `uv run ./hadcrut5_plot.py`.
 $ ./hadcrut5_plot.py --help
 usage: hadcrut5_plot.py [-h] [-f OUTFILE] [-p PERIOD] [-m SMOOTHER] [-g] [-n] [-s] [-a ANNOTATE] [-v]
 
-Parse and plot the HadCRUT5 temperature datasets v2023.1 (stable)
-Copyright (C) 2020-2023 Davide Madrisan <[email protected]>
+Parse and plot the HadCRUT5 temperature datasets v2024.1 (stable)
+Copyright (C) 2020-2024 Davide Madrisan <[email protected]>
 License: GNU General Public License v3.0
 
 options:
@@ -106,8 +106,8 @@ $ ./hadcrut5_plot.py --global --period "1880-1920" --time-series monthly
 ```
 usage: hadcrut5_bars.py [-h] [-f OUTFILE] [-p PERIOD] [-v]
 
-Parse and plot the HadCRUT5 temperature datasets v2023.1 (stable)
-Copyright (C) 2020-2023 Davide Madrisan <[email protected]>
+Parse and plot the HadCRUT5 temperature datasets v2024.1 (stable)
+Copyright (C) 2020-2024 Davide Madrisan <[email protected]>
 License: GNU General Public License v3.0
 
 options:
@@ -135,8 +135,8 @@ $ ./hadcrut5_bars.py --period "1880-1920" --outfile plots/HadCRUT5-global-1880-1
 ```
 usage: hadcrut5_stripe.py [-h] [-f OUTFILE] [-r {global,northern,southern}] [-v] [-l]
 
-Parse and plot a stripe image of the HadCRUT5 temperature datasets v2023.1 (stable)
-Copyright (C) 2020-2023 Davide Madrisan <[email protected]>
+Parse and plot a stripe image of the HadCRUT5 temperature datasets v2024.1 (stable)
+Copyright (C) 2020-2024 Davide Madrisan <[email protected]>
 License: GNU General Public License v3.0
 
 options:

hadcrut5_bars.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-# Copyright (c) 2020-2022 Davide Madrisan <[email protected]>
+# Copyright (c) 2020-2024 Davide Madrisan <[email protected]>
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 """

hadcrut5_stripe.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-# Copyright (c) 2023 Davide Madrisan <[email protected]>
+# Copyright (c) 2023-2024 Davide Madrisan <[email protected]>
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 """