Update Drupal core to 9.5.x

As the information on Drupal.org page, Drupal 9.5 is the final minor release of the 9.x series. It will be supported until November 2023. It also provides the same public API as Drupal 10.0 aside from deprecated code. And current the version of 9.5.x service is 9.5.0-beta2@beta. 

Run composer command to update:

composer require drupal/core-recommended:9.5.0-beta2@beta drupal/core-composer-scaffold:9.5.0-beta2@beta drupal/core-project-message:9.5.0-beta2@beta --update-with-all-dependencies

From Drupal 9.5: PHP required minimum version is  8.1.x and I can try Ckeditor 5 and To prepare for the removal of the CKEditor 4 module from core next version.