Add --ignore-platform-reqs due to ig_ldap_sso_auth extension

.gitlab-ci.yml

@@ -21,7 +21,7 @@ build:
   - composer config store-auths false
   - composer config http-basic.git-t3o.typo3.org gitlab-ci-token ${CI_BUILD_TOKEN}
   script:
-  - composer install --no-dev
+  - composer install --no-dev --ignore-platform-reqs
   artifacts:
     paths:
     - ./