ci(docs): upgrade docs job to current configuration

.gitlab-ci.yml

@@ -94,7 +94,7 @@ sphinx:
   rules:
     - if: $CI_COMMIT_TAG == null
   script:
-    - poetry install --with docs
+    - poetry install --extras docs
     - apt update
     - apt -y install pandoc
     - sphinx-build -W --keep-going docs/ docs/_build