Avoid publishing doctrees files from Sphinx to prevent errors

[d33bs]

We ran into an error regarding the size of the jump_umap_analysis_with_cosmicqc.doctree when building and attempting to deploy the docsite (see https://github.com/WayScience/coSMicQC/actions/runs/10839957924/job/30081358345). We can work around this by slightly reducing the notebook size (likely by moving to an exported image over interactive plot for one of the UMAP scatter plots).

According to the error the file sits at 105.31 MB, we need to remain under 100 MB to avoid the error.

[d33bs]

I found that this was primarily caused by doctree files which are intermediary data required for building HTML documents.