test: try to fix CI test - remove phpunit coverage

.gitlab-ci.yml

@@ -58,7 +58,7 @@ unit_tests:
   <<: *vendor-install-definition
   <<: *cache-pull-definition
   script:
-    - php -dxdebug.mode=coverage vendor/bin/phpunit --coverage-text --colors=never --coverage-html storage/artefacts/coverage/
+    - php -dxdebug.mode=coverage vendor/bin/phpunit --colors=never
   coverage: /^\s+Lines:\s+(\d+)\.\d+%/
   artifacts:
     paths: