Refactored the GitHub workflow to run only if the actor is not Dependabot. Updated the return type of the method in the class to use the constants for success and failure.

[thejmitchener]

Introduces two significant improvements to the project.

First, it refines the GitHub Actions workflow by adding a condition to ensure that the workflow only runs if the actor is not Dependabot. This change prevents unnecessary workflow executions triggered by Dependabot, optimizing our CI/CD process and reducing clutter in our workflow logs.

Second, it updates the return type of the handle method in the SitemapGenerateCommand class from bool to int. This change aligns the method's return values with the Symfony Console Component's conventions, using constants for success and failure. By returning Command::SUCCESS and Command::FAILURE, we enhance code clarity and ensure better integration with Symfony's command handling, which improves maintainability and consistency across the codebase.

Overall, these changes improve the efficiency of our CI/CD pipeline and enhance the robustness of our command handling logic.