How to Commit and Deploy Search Layouts with Copado
Search layouts don't have their own metadata type, therefore they cannot be selected in the metadata grid in Copado unlike, for example, objects (CustomObject), fields (CustomField), layouts (Layout) or workflow rules (WorkflowRule). Because of this, the only way of committing them is by selecting the component to which they belong, which is the object (CustomObject).
If you need to commit and deploy a change that was made in a search layout in the Account object, you will have to select the Account object in the commit screen. This will commit all the attributes in the account object including the Search Layouts.