Trigger new build for automl-gpu (#3297)

assets/training/forecasting_demand/environments/automl-gpu/context/Dockerfile

@@ -18,4 +18,4 @@ RUN conda env create -p $AZUREML_CONDA_ENVIRONMENT_PATH -f conda_dependencies.ya
     rm conda_dependencies.yaml && \
     conda run -p $AZUREML_CONDA_ENVIRONMENT_PATH pip cache purge && \
     conda clean -a -y
-# dummy number to change when needing to force rebuild without changing the definition: 1
+# dummy number to change when needing to force rebuild without changing the definition: 2