- Removed inputs for 'quiqqer-major-version' from .gitlab-ci.yml file for stabilization.
- Allowed phpunit to run on PHP 8.1 by removing phpunit-php8.1 block from .gitlab-ci.yml.
- Updated the homepage URL from 'http' to 'https' in composer.json.
- Changed the support URL from 'http' to 'https' in composer.json.
- Updated the required 'quiqqer/quiqqer' version to 'quiqqer/core' '^2' in composer.json.

BREAKING CHANGE: 'quiqqer/quiqqer' version to 'quiqqer/core'