Add ipython

Author: seisman

.github/workflows/docs.yml

@@ -65,9 +65,8 @@ jobs:
         shell: bash -l {0}
         run: |
           conda install gmt=6.1.1 numpy pandas xarray netCDF4 packaging \
-                        make \
-                        sphinx sphinx-copybutton sphinx-gallery sphinx_rtd_theme=0.4.3 \
-                        myst-parser
+                        make sphinx sphinx-copybutton sphinx-gallery \
+                        sphinx_rtd_theme=0.4.3 myst-parser ipython
 
       # Show installed pkg information for postmortem diagnostic
       - name: List installed packages