Handle DELL servers that don't have reboot option about hetzner HOT 2 OPEN

$ hetznerctl list
<MACHINE_IP> (id: <MACHINE_ID>, model: AX51-NVMe, name: sanctum)

$ hetznerctl rescue <MACHINE_IP> --debug
Robot of #<USERNAME>: Sending GET request to Robot at /server/<MACHINE_IP> with data None.
Robot of #<USERNAME>: Got response from Robot with status 200 and data {'server': {'server_ip': '<MACHINE_IP>', 'server_number': <MACHINE_ID>, 'server_name': 'sanctum', 'product': 'AX51-NVMe', 'dc': 'FSN1-DC16', 'traffic': 'unlimited', 'status': 'ready', 'cancelled': False, 'paid_until': '2021-05-20', 'ip': ['<MACHINE_IP>'], 'subnet': [{'ip': '2a01:4f8:252:641::', 'mask': '64'}], 'reset': True, 'rescue': True, 'vnc': True, 'windows': False, 'plesk': False, 'cpanel': False, 'wol': True, 'hot_swap': False, 'linked_storagebox': None}}.
Robot of #<USERNAME>: Sending GET request to Robot at /boot/<MACHINE_IP>/rescue with data None.
Robot of #<USERNAME>: Got response from Robot with status 200 and data {'rescue': {'server_ip': '<MACHINE_IP>', 'server_number': <MACHINE_ID>, 'os': 'linux', 'arch': 64, 'active': True, 'password': 'uRYKN3rQ2uy8je', 'authorized_key': [], 'host_key': [], 'boot_time': None}}.
Server #<MACHINE_ID>: Tring to reboot using the 'soft' method.
Robot of #<USERNAME>: Sending POST request to Robot at /reset/<MACHINE_IP> with data 'type=sw'.
Robot of #<USERNAME>: Got response from Robot with status 400 and data {'error': {'status': 400, 'code': 'INVALID_INPUT', 'message': 'invalid input', 'missing': None, 'invalid': ['type']}}.
Traceback (most recent call last):
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/bin/.hetznerctl-wrapped", line 415, in <module>
    main()
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/bin/.hetznerctl-wrapped", line 411, in main
    subcommand.execute(robot, parser, args)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/bin/.hetznerctl-wrapped", line 106, in execute
    server.rescue.shell(**kwargs)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/server.py", line 137, in shell
    self.observed_activate(*args, **kwargs)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/server.py", line 115, in observed_activate
    self.server.observed_reboot(*args, **kwargs)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/server.py", line 453, in observed_reboot
    return self.reset.observed_reboot(*args, **kwargs)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/reset.py", line 53, in observed_reboot
    self.reboot(mode)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/reset.py", line 109, in reboot
    return self.conn.post('/reset/{0}'.format(self.server.ip),
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/robot.py", line 371, in post
    return self.request('POST', path, data)
  File "/nix/store/qfclbwcv47ywcqcmkjg3fnnfp4d7davx-python3.8-hetzner-0.8.3/lib/python3.8/site-packages/hetzner/robot.py", line 365, in request
    raise RobotError(err, response.status)
hetzner.RobotError: 400 - invalid input, fields: type (400)