Use new lint/test docker image in CI, lint codebase

[joecorall]

GitHub Issue: Relates to Islandora/islandora#1095 Islandora/islandora#1096

What does this Pull Request do?

Replace the CI test GitHub Actions to instead of performing a drupal site install in the runner, use a docker image.

Also fixed a bug the tests surfaced for Drupal 10.x 4c90dad

that would throw

PHPUnit\Framework\Error\Warning thrown while calling __toString on a Drupal\Core\StringTranslation\TranslatableMarkup object in /var/www/drupal/web/core/lib/Drupal/Component/Render/FormattableMarkup.php on line 247: Placeholders must begin with one of the following "@", ":" or "%", invalid placeholder ( @bundle_name) with string: "Can't generate JSON-LD Context without at least one rdf:type for Entity type @entity_type, Bundle @bundle_name combo."

/var/www/drupal/web/core/lib/Drupal/Component/Utility/ToStringTrait.php:20
/var/www/drupal/web/modules/contrib/jsonld/src/ContextGenerator/JsonldContextGenerator.php:176

How should this be tested?

GitHub Actions pass all green