The most common and final thing to fix for Drupal 10 compatibility. It is not required to specify composer.json limitations on Drupal core compatibility, as the Drupal.org composer endpoint will take the values from info.yml files anyway. However, it is required that the info.yml file core_version_requirement setting is Drupal 10 compatible. Only make this change if the other problems are already fixed to avoid causing issues on Drupal 10 sites.
Results are from dataset #58581 from 2023-12-03T12:36. Report is ran by the Drupal Association regularly.