v13: pipenv to uv upgrade guide

[slint]

• Docs page under the v13 Upgrade category
• "Companion migration script" which automates some of the steps
  • Dislaimer: major part of the script was AI-generated, from the diff of Switch to uv zenodo/zenodo-rdm#1199 . I've tested it with success on the CDS-RDM instance and in a vanilla cookiecutter-d InvenioRDM instance.

[max-moser]

[max-moser]

just as a note, AFAIK the uv image is based on alpine (which uses musl instead of glibc) – which should not be an issue here because uv is rust/statically compiled (and thus doesn't need to be compiled against glibc vs. musl)

it might cause trouble if a dynamically linked binary were copied over to a glibc-based image

[egabancho]

I tested it on one of my instances, and it worked pretty nicely.
The only issue was with one requirement that had for version *, as in ipdb = "*". This was translated to ipdb*.