Update copyright year

Author: simon-dew

README.adoc

@@ -50,7 +50,7 @@ This project is based on the https://openapi-generator.tech/[OpenAPI Generator]
 
 == Licensing
 
-The Couchbase Developer REST API Documentation © 2024 by Couchbase Inc. is licensed under various licenses.
+The Couchbase Developer REST API Documentation © 2025 by Couchbase Inc. is licensed under various licenses.
 The Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) is one such license.
 See the LICENSE file for details.
 All licenses used in this repository can be found in the top-level `licenses` directory.