Source: nbconvert Version: 6.5.3-4 Followup-For: Bug #1057949 An nbconvert update (>= 7.6) is also needed to support the latest version of pandoc 3.1.3. That is, to avoid the warning that pandoc 3.1.3 is "unsupported".
cf. https://github.com/spatialaudio/nbsphinx/issues/750#issuecomment-1613973946