Hi, running a setuptools/pybind11 project in Gitlab-CI ([v17.1.2-ee](https://gitlab.com/gitlab-org/gitlab/-/tags/v17.1.2-ee)) leads to following YAML analysis error: > jobs:make_wheels config contains unknown keys: matrix It seems, that `matrix` is not a valid keyword ([Docs](https://docs.gitlab.com/ee/ci/yaml/#parallelmatrix)) [here](https://github.com/scientific-python/cookie/blob/d5c18f56dd44830cafb4862871ff66496f11de80/%7B%7Bcookiecutter.project_name%7D%7D/%7B%25%20if%20cookiecutter.__ci%3D%3D'gitlab'%20%25%7D.gitlab-ci.yml%7B%25%20endif%20%25%7D#L123), but only `parallel:matrix` is. `parallel:matrix`, opposed to `matrix` is also used in the same config at another place [here](https://github.com/scientific-python/cookie/blob/d5c18f56dd44830cafb4862871ff66496f11de80/%7B%7Bcookiecutter.project_name%7D%7D/%7B%25%20if%20cookiecutter.__ci%3D%3D'gitlab'%20%25%7D.gitlab-ci.yml%7B%25%20endif%20%25%7D#L80) which makes it look like a small oversight. YAML analysis won't complain after changing it.