Migration django 4.2

Migration de django 2.2 (plus maintenu) vers 4.2 (LTS actuelle)

added Doing Security labels

assigned to @bleizi

I start a migration to python3.11 (debian Bookworm) and django 4.2 (#123 (closed)). It pass tests but:

• linters fail because of a breaking change fix, and I'm not sure how to fix it
• i'm note sure that there is no bug, so additionnal tests are needed
• documentation update is needed
• i had to remove CAS (and htcpcp-tea) which are not compatible with django 4.2. Maybe found a solution for the CAS (the only use is belenios, maybe another authentification is possible)
• OAuth secret are now hashed, check are needed before an irreversible action
• maybe there are no more used/not optimal code

changed milestone to %Kaamel[note]

mentioned in merge request !230 (merged)

added Code Quality Frustration friendly labels

removed Doing label

closed