Fix Gitlab CI pipeline

Problem/Motivation

$ composer install $COMPOSER_EXTRA
No composer.lock file present. Updating dependencies to latest instead of installing from lock file. See https://getcomposer.org/install for more information.
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.
  Problem 1
    - Root composer.json requires drupal/ai_provider_amazeeio 1.1.x-dev -> satisfiable by drupal/ai_provider_amazeeio[1.1.x-dev (alias of dev-1.1.x)].
    - drupal/ai_provider_amazeeio dev-1.1.x requires drupal/ai_vdb_provider_postgres ^1.0@alpha -> satisfiable by drupal/ai_vdb_provider_postgres[1.0.0-alpha1, 1.0.0-alpha2, 1.0.x-dev].
    - drupal/ai_vdb_provider_postgres[1.0.0-alpha1, ..., 1.0.x-dev] require ext-pgsql * -> it is missing from your system. Install or enable PHP's pgsql extension.
    - drupal/ai_provider_amazeeio 1.1.x-dev is an alias of drupal/ai_provider_amazeeio dev-1.1.x and thus requires it to be installed too.
To enable extensions, verify that they are enabled in your .ini files:
    - /usr/local/etc/php/php-cli.ini
You can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode.
Alternatively, you can run Composer with `--ignore-platform-req=ext-pgsql` to temporarily ignore these required extensio

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes