Try and fix the build

.gitlab-ci.yml

@@ -6,7 +6,7 @@ test:
   image: python:3.10-slim
   before_script:
     - apt-get update
-    - apt-get install -y --no-install-recommends python3-dev libxmlsec1 libxmlsec1-dev libpq-dev libmariadb-dev
+    - apt-get install -y --no-install-recommends python3-dev libxmlsec1 libxmlsec1-dev libpq-dev libmariadb-dev pkg-config
     - pip install poetry
     - poetry install
   script: