Added missing icecream dependency for aidge_onnx

.gitlab/ci/ubuntu_python.gitlab-ci.yml

@@ -49,7 +49,7 @@ test:ubuntu_python:
     - python -m pip list
     - >
       if [[ "$CI_PROJECT_NAME" == "aidge_onnx" ]]; then
-        python -m pip install requests onnxruntime>=1.18.0
+        python -m pip install requests onnxruntime>=1.18.0 icecream
       fi
   script:
     - cd ${CI_PROJECT_NAME}