Fixes for debian packaging

About

Follow-up of !473 (closed) - this one is for 2024.2.0 (master branch)

See discussions in #519 (closed)

Close #529

To do

• Patch pyproject.toml - see https://udd.debian.org/patches.cgi?src=nabu&version=2024.1.7-1
• Fix test_unsharp.py::TestUnsharp::test_opencl_unsharp (fails with pocl 6.0-1) - see https://ci.debian.net/packages/n/nabu/testing/amd64/49560879/
• Make sure unit test work when network is not available
• Check jp2k - see #529
• Check OpenCL halftomo - see #529
• Close #526 (closed)

Notes

This obviously entails to create a fresh debian-sid environment