/usr/share/lintian/overrides/jupyter-sphinx-theme-common is in jupyter-sphinx-theme-common 0.0.6+ds1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # The upstream source tarball contains no ChangeLog file.
jupyter-sphinx-theme-common: no-upstream-changelog
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