Shutdown fails to cancel active tasks

[greenape]

handle: <Handle shutdown(socket=<zmq.asyncio....452c10 closed>)() at /root/.local/share/virtualenvs/flowmachine-xFJaCIfC/lib/python3.12/site-packages/flowmachine/core/server/server.py:203>
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run
    self._context.run(self._callback, *self._args)
  File "/root/.local/share/virtualenvs/flowmachine-xFJaCIfC/lib/python3.12/site-packages/flowmachine/core/server/server.py", line 212, in shutdown
    for task in asyncio.Task.all_tasks()
                ^^^^^^^^^^^^^^^^^^^^^^
AttributeError: type object '_asyncio.Task' has no attribute 'all_tasks'
Traceback (most recent call last):
  File "/root/.local/share/virtualenvs/flowmachine-xFJaCIfC/bin/flowmachine", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/root/.local/share/virtualenvs/flowmachine-xFJaCIfC/lib/python3.12/site-packages/flowmachine/core/server/server.py", line 273, in main
    asyncio.run(
  File "/usr/local/lib/python3.12/asyncio/runners.py", line 194, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/root/.local/share/virtualenvs/flowmachine-xFJaCIfC/lib/python3.12/site-packages/flowmachine/core/server/server.py", line 249, in recv
    await receive_next_zmq_message_and_send_back_reply(
  File "/root/.local/share/virtualenvs/flowmachine-xFJaCIfC/lib/python3.12/site-packages/flowmachine/core/server/server.py", line 125, in receive_next_zmq_message_and_send_back_reply
    multipart_msg = await socket.recv_multipart()
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
asyncio.exceptions.CancelledError```