Update a .gitlab-ci.yml file (5)

Problem/Motivation

• Update a .gitlab-ci.yml file to fix the following composer failure:

  Your requirements could not be resolved to an installable set of packages.
    Problem 1
      - Root composer.json requires drupal/core-dev 10.3.x -> satisfiable by drupal/core-dev[10.3.0-beta1, ..., 10.3.x-dev].
      - composer/composer[2.9.6, ..., 2.10.x-dev] require justinrainbow/json-schema ^6.5.1 -> satisfiable by justinrainbow/json-schema[6.5.1, ..., 6.8.0].
      - drupal/core-dev[10.3.0-beta1, ..., 10.3.0-rc1] require composer/composer ^2.7 -> satisfiable by composer/composer[2.9.6, ..., 2.10.x-dev].
      - drupal/core-dev[10.3.0-beta1, ..., 10.3.0-rc1] require justinrainbow/json-schema ^5.2 -> satisfiable by justinrainbow/json-schema[5.2.0, ..., 5.x-dev].
      - Conclusion: don't install one of composer/composer[2.9.7], justinrainbow/json-schema[5.3.3] (conflict analysis result)
      - Conclusion: don't install drupal/core-dev 10.3.0 (conflict analysis result)
      - Conclusion: don't install drupal/core-dev 10.3.14 (conflict analysis result)
      - You can only install one version of a package, so only one of these can be installed: justinrainbow/json-schema[5.2.0, ..., 5.x-dev, 6.5.1, ..., 6.8.0].