This reverts commit ef19500c

This reverts commit 2b5e1c76

Setting composer to self-update to 2.4.4, last known good per: https://www.drupal.org/project/drupalci_environments/issues/3333480

Update GatherDependencies.php to add a command to allow-plugins true - since in a CI environment we want to allow any plugin dependencies without manual confirmation or requiring every contrib project to specify individually

"prettier eslint plugin reports bogus errors for contrib projects"

Allow testrunner to use local images/detect missing images: https://www.drupal.org/project/drupalci_testbot/issues/3108620

Trying phpcs config changes suggested by @mfb in: https://www.drupal.org/project/drupalci_testbot/issues/3283978

Update phpcs.xml.dist with config for installed_paths to hopefully allow both coder <= 8.3.13 and coder >= 8.3.14 to work.