modify ci config to test updated sphinx_gallery

Author: NirobNabil

.circleci/config.yml

@@ -107,6 +107,7 @@ commands:
             python -m pip install --user \
                 numpy<< parameters.numpy_version >> \
                 -r requirements/doc/doc-requirements.txt
+            pip install git+https://github.com/larsoner/sphinx-gallery.git@serial
             python -m pip install --no-deps --user \
                 git+https://github.com/matplotlib/mpl-sphinx-theme.git
 

requirements/doc/doc-requirements.txt

@@ -18,7 +18,6 @@ pydata-sphinx-theme~=0.15.0
 mpl-sphinx-theme~=3.8.0
 pyyaml
 sphinxcontrib-svg2pdfconverter>=1.1.0
-sphinx-gallery>=0.12.0
 sphinx-copybutton
 sphinx-design
 sphinx-tags>=0.3.0