doc: update copyright notice in the documentation

Update copyright notice to reflect current year.

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

doc/conf.py

@@ -35,7 +35,7 @@
 # -- Project --------------------------------------------------------------
 
 project = "Zephyr Project"
-copyright = "2015-2024 Zephyr Project members and individual contributors"
+copyright = "2015-2025 Zephyr Project members and individual contributors"
 author = "The Zephyr Project Contributors"
 
 # parse version from 'VERSION' file