The AI Search submodule is being moved out of the AI project in preparation for the 2.0.x-dev development branch, as discussed in #3552884: Move out AI Search. Therefore, the module is marked as deprecated in version 1.3.0 and will be removed in version 2.0.0.
It is recommended to use a standalone contrib module https://www.drupal.org/project/ai_search as a replacement instead of the submodule of the AI Core project. The standalone AI Search module is now maintained separately with its own release cycle and is designed to work with AI Core 2.0.x.
If You Are Using AI Search
To ensure that your search functionality is not broken after updating to AI Core 2.0.0, add the standalone ai_search module with Composer using the following command:
composer require 'drupal/ai_search:^2.0@alpha'
Note: The initial release is an alpha version and is subject to further changes before stable release. The standalone module requires AI Core 2.0.x.
If You Haven't Used AI Search
If the AI Search submodule is not installed in your installation, no action is required.