Afaik, moving support of pgweb from buster to bookworm isn't planned yet, but here's a note that may be useful when this is the case.
To avoid crashes during deployment, the following dependencies must be updated in requirements.txt:
bleach==3.1.4 -> bleach>=3.3.1
Babel==2.6.0 -> Babel>=2.7.0
Otherwise, there's an issue regarding collections in python3:
ImportError: cannot import name 'Mapping' from 'collections
I don't think it's useful to send a patch yet, but let me know if this is the case.
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Célestin Matte