v1.2.0: Update composer/semver from 3.2.2 to 3.2.4, update symfony/console an…

Added

• Added phpstan/phpstan-strict-rules and phpstan/extension-installer packages

Changed

• Updated composer/semver dependency from 3.2.2 to 3.2.4
• Updated symfony/console dependency from v5.1.8 to v5.2.6
• Updated isaac/php-code-sniffer-standard dependency from v19.0.0 to v21.0.0
• Updated phpstan/phpstan dependency from 0.12.53 to 0.12.85
• Switched to Composer 2 (Composer 1 still works)
• Updated Copyright year