This issue occurs when you explicitly require contributed modules that are already included with Drupal Starter Kits. This causes dependency deadlock and slows the upgrade process.

Workaround:

1. Review dependencies: Review the dependencies listed in your project’s root composer.json file. Identify any modules that are provided by Drupal Starter Kits.
2. Remove Drupal Starter Kits dependencies: Remove the direct dependencies associated with Drupal Starter Kits from the root composer.json file. This prevents conflicts during the upgrade process.

3. Run Composer update: After you remove Drupal Starter Kits dependencies, run the following command:

   copy

   composer update acquia/acquia_cms -W

   The -W parameter ensures that your composer.lock file is updated with the latest compatible versions of the dependencies.

By following these steps, you can circumvent the dependency deadlock and enable a seamless update of Drupal Starter Kits to its latest version.

Here is an example of the composer.json file without direct dependencies: