Update .gitlab-ci.yml file: added rocrate as optional dependency during pip...

Update .gitlab-ci.yml file: added rocrate as optional dependency during pip install for the test stage

.gitlab-ci.yml

@@ -131,7 +131,7 @@ unittest_py3.8:
     # TODO: Use f-branch logic here
     - pip install git+https://gitlab.indiscale.com/caosdb/src/caosdb-pylib.git@dev
     - pip install git+https://gitlab.indiscale.com/caosdb/src/caosdb-advanced-user-tools.git@dev
-    - pip install .[h5-crawler,spss]
+    - pip install .[h5-crawler,spss,rocrate]
     # actual test
     - caosdb-crawler --help
     - pytest --cov=caosdb -vv ./unittests