Update CI script

.gitlab-ci.yml

@@ -22,10 +22,10 @@ test:
     - pip install --upgrade pip
     - pip install --upgrade setuptools
     - pip install --upgrade numpy
-    # Install a version of silx containing not-released-yet features needed for Nabu
-    # Hopefully this wont be needed after the 0.12 release
     - pip install silx
   script:
+    # tomoscan does not advertise its dependencies in setup.py - see tomoscan/-/issues/9
+    - pip install lxml
     - pip install git+https://gitlab.esrf.fr/tomotools/tomoscan.git
     - python -m pip install .
     - nabu-test