Update to composer 2

• https://blog.packagist.com/composer-2-0-is-now-available/
• https://chromatichq.com/blog/preventing-conflicts-when-upgrading-composer-2
• https://www.drupal.org/node/3174472

Twitter:

After upgrading to Composer 2, this command helped me keeping Drupal 8 projects compatible -

composer require "composer/installers:^1.9" "cweagans/composer-patches:^1.7" "drupal/core-composer-scaffold:^8.9" "zaporylie/composer-drupal-optimizations:^1.2"