test removal of rstcheck from dependencies

.gitlab-ci.yml

@@ -15,7 +15,7 @@ stages:
   - ls -l
   - pip install -U pip
   - pip --version
-  - pip install pytest black ruff pydocstyle pre-commit rstcheck
+  - pip install pytest black ruff pydocstyle pre-commit
   - pytest --version
   - cat /etc/issue