feat(backend)!: bump to dj 5.2 lts / py 3.11 (#10730)

* feat(backend): bump to 5.2 lts / python 3.11

This will give us support till 2027-10 (PEP 664)

* bump dependencies

* fix dflt version

* remove 3.9 precaution

* changes for 5.2

* changes for py 3.10

* debug command

* lower crypto again

* another lowering

* fix version string

* lower minimum version to 3.11

* update refs

* fix text

* reaking: remove now unsupported OS

* disable break

* remove temp changes

* fix ruff call

* fix remaining ruff warnings

* remove old arg

* lower allauth reqs

* replace old method

* fix issue with args passing beeing depreceated

* add changelog entries

* bump dependencies a bit further

* fix broken image init for now
might need a refactor

* fix another test

* refactor image name lookup

* mroe refactoring

* ensure str does not cause an issue

* update referenced function

* fix cal sig

* simplify method and add test

* refactor

* ignore wrong typings

* fix deprecated feature

* simplify

* ensure image tests do their job

* simplify

* re-add type check

* fix test

* fix assertations - wonder how long this was broken

* bump to newer versions

* bump deps

* fix assertation

contrib/packager.io/postinstall.sh

@@ -26,7 +26,7 @@ export DATA_DIR=${APP_HOME}/data
 export SETUP_NGINX_FILE=${SETUP_NGINX_FILE:-/etc/nginx/sites-enabled/inventree.conf}
 export SETUP_ADMIN_PASSWORD_FILE=${CONF_DIR}/admin_password.txt
 export SETUP_NO_CALLS=${SETUP_NO_CALLS:-false}
-export SETUP_PYTHON=${SETUP_PYTHON:-python3.9}
+export SETUP_PYTHON=${SETUP_PYTHON:-python3.11}
 export SETUP_ADMIN_NOCREATION=${SETUP_ADMIN_NOCREATION:-false}
 # SETUP_DEBUG can be set to get debug info
 # SETUP_EXTRA_PIP can be set to install extra pip packages