Upgrade the latest gym for notebook tutorial.

Author: jaeyoo

scripts/ci_validate_tutorials.sh

@@ -15,11 +15,11 @@
 # ==============================================================================
 
 # Run the tutorials using the installed pip package
-pip install jupyter nbconvert==6.4.3 jupyter-client==6.1.12 ipython==7.22.0
+pip install jupyter nbclient==0.6.5 jupyter-client==6.1.12 ipython==7.22.0
 # Workaround for ipykernel - see https://github.com/ipython/ipykernel/issues/422
 pip install ipykernel==5.1.1
 # OpenAI Gym pip package needed for the quantum reinforcement learning tutorial
-pip install gym==0.18.0
+pip install gym==0.24.1
 # tf_docs pip package needed for noise tutorial.
 pip install -q git+https://github.com/tensorflow/docs
 # Leave the quantum directory, otherwise errors may occur

scripts/test_tutorials.py

@@ -18,7 +18,7 @@
 
 from absl.testing import parameterized
 import nbformat
-import nbconvert
+import nbclient
 import tensorflow as tf
 
 # Must be run from the directory containing `quantum` repo.
@@ -46,9 +46,7 @@ def test_notebook(self, path):
                 src = re.sub('n_epochs ?= ?.*', 'n_epochs = 2', src)
                 cell['source'] = src
 
-        _ = nbconvert.preprocessors.execute.executenb(nb,
-                                                      timeout=900,
-                                                      kernel_name="python3")
+        _ =  nbclient.execute(nb, timeout=900, kernel_name="python3")
 
 
 if __name__ == "__main__":