Use pip install, not conda install for examples deps

.github/workflows/ci.yml

@@ -98,7 +98,9 @@ jobs:
                 curl -L -O https://tiker.net/ci-support-v0
                 . ./ci-support-v0
                 build_py_project_in_conda_env
-                conda install matplotlib ipykernel nbconvert
+
+                # ipython_genutils for https://github.com/jupyter/nbconvert/issues/1725
+                with_echo pip install matplotlib ipykernel nbconvert ipython_genutils
 
                 install_ispc
 

.gitlab-ci.yml

@@ -118,7 +118,10 @@ Pytest POCL Examples:
     . ./ci-support-v0
 
     build_py_project_in_venv
-    pip install matplotlib ipykernel nbconvert
+
+    # ipython_genutils for https://github.com/jupyter/nbconvert/issues/1725
+    pip install matplotlib ipykernel nbconvert ipython_genutils
+
     install_ispc
 
     . ./.ci/examples-funcs.sh