Install correct package for pg_config

.gitlab-ci.yml

@@ -13,7 +13,7 @@ tests:
       alias: db
   image: python:3.9-alpine3.15
   before_script:
-    - apk add python3-dev build-base curl postgresql-libs
+    - apk add python3-dev build-base curl libpq-dev
     - curl -sSL https://install.python-poetry.org | python3 -
     - export PATH="/root/.local/bin:$PATH"
     - poetry install