DOCS: gallery carousel images blanking #6885
Description
📚 Documentation
In order to avoid a weird image overlay bug for the iris gallery carousel on the homepage (#6884) I needed to pin the pydata-sphinx-theme to !=0.16.0,!=0.16.1,<0.16.2
Waiting for a fix in pydata-sphinx-theme.
For context see bjlittle/geovista#1247.