Issue #3471550 by chr.fritsch, daniel.bosen: Drupal 11 compatibility and fix CI integration

.gitlab-ci.yml

composer.json

...tests/src/Functional/UpdateHelperChecklistToolbarTest.php

...helper_checklist/tests/src/Kernel/UpdateChecklistTest.php

.../update_helper_checklist/update_helper_checklist.info.yml

phpstan-baseline.neon

phpstan.neon

src/Drush/Generators/ConfigurationUpdateGenerator.php

src/UpdateLogger.php

tests/src/Functional/DrushTest.php

tests/src/Kernel/ConfigHandlerTest.php

tests/src/Kernel/ConfigNameTest.php

tests/src/Kernel/ReversibleConfigDifferTest.php

tests/src/Kernel/UpdaterTest.php

tests/src/Unit/ConfigDiffTransformerTest.php

update_helper.info.yml