Revert pykwalify to jsonschema

[bjarki-andreasen]

Recent commits moving from pykwalify to jsonschema have resulted in the west tool and zephyr being out of sync, see zephyrproject-rtos/west#904 (comment)

Following the getting started guide now will result in

Traceback (most recent call last):
  File "/home/nordic/Documents/zephyr-2/.venv/lib/python3.11/site-packages/west/commands.py", line 565, in __call__
    mod = _commands_module_from_file(self.py_file)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/nordic/Documents/zephyr-2/.venv/lib/python3.11/site-packages/west/commands.py", line 718, in _commands_module_from_file
    spec.loader.exec_module(mod)
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/home/nordic/Documents/zephyr-2/zephyr/scripts/west_commands/packages.py", line 20, in <module>
    import zephyr_module
  File "/home/nordic/Documents/zephyr-2/zephyr/scripts/zephyr_module.py", line 27, in <module>
    import jsonschema
ModuleNotFoundError: No module named 'jsonschema'

as west packages pip --install is called

therefore revert the changes until this issue is fixed as it is imperative that the getting started guide works.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[pdgendt]

Alternative fix: #103671

[bjarki-andreasen]

Alternate fix will likely be applied