build: Updating composer dependencies
- mediawiki/mediawiki-codesniffer: 37.0.0 → 38.0.0
- php-parallel-lint/php-parallel-lint: 1.3.0 → 1.3.1
Additional changes:
- composer.json: Updated phpcs command in composer test (T280592).
- composer.json: Added phpcs command to scripts (T280592).
Change-Id: I8fb93f65ece92d76823d95b9f3db54c143fdea2d