Add random bec_lib module

Due to some error when testing on the nodes on gitea, the bec_lib package is imported. Now it has been added in the installation as a hack

.gitea/workflows/test.yaml

@@ -20,6 +20,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
+        python -m pip install bec_lib
         python -m pip install .
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi