Fix issue with recent versions of jsonargparse

[starride-teklia]

We have an error with recent versions of jsonargparse.
To avoid it, I set an old version (4.7) in the requirements.txt but it would be better to fix the code to be compatible with the latest versions (4.18). I also need to fix this test related to this issue.

Here is the error I get:

Traceback (most recent call last):
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/bin/pylaia-htr-train-ctc", line 11, in <module>
    load_entry_point('laia', 'console_scripts', 'pylaia-htr-train-ctc')()
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/laia/scripts/htr/train_ctc.py", line 198, in main
    args = get_args()
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/laia/scripts/htr/train_ctc.py", line 185, in get_args
    args = parser.parse_args(argv, with_meta=False)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/deprecated.py", line 112, in patched_parse
    cfg = parse_method(*args, _skip_check=_skip_check, **kwargs)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 364, in parse_args
    cfg, unk = self.parse_known_args(args=args, namespace=cfg)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 237, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
  File "/usr/lib/python3.8/argparse.py", line 2018, in _parse_known_args
    start_index = consume_optional(start_index)
  File "/usr/lib/python3.8/argparse.py", line 1958, in consume_optional
    take_action(action, args, option_string)
  File "/usr/lib/python3.8/argparse.py", line 1886, in take_action
    action(self, namespace, argument_values, option_string)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/actions.py", line 173, in __call__
    self.apply_config(parser, cfg, self.dest, values)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/actions.py", line 190, in apply_config
    cfg_file = parser.parse_path(value, **kwargs)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 533, in parse_path
    parsed_cfg = self.parse_string(
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/deprecated.py", line 112, in patched_parse
    cfg = parse_method(*args, _skip_check=_skip_check, **kwargs)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 578, in parse_string
    cfg = self._load_config_parser_mode(cfg_str, cfg_path, ext_vars, previous_config.get())
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 621, in _load_config_parser_mode
    return self._apply_actions(cfg_dict, prev_cfg=prev_cfg)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 1229, in _apply_actions
    value = self._check_value_key(action, value, action_dest, prev_cfg)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/core.py", line 1279, in _check_value_key
    value = action._check_type(value, cfg=cfg)  # type: ignore
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/typehints.py", line 366, in _check_type
    val = adapt_typehints(val, self._typehint, **kwargs)
  File "/home/users/starride/git_repos/pylaia_bump_pytorch/.env/lib/python3.8/site-packages/jsonargparse/typehints.py", line 574, in adapt_typehints
    adapt_kwargs_n = {**adapt_kwargs, 'prev_val': prev_val[n]} if isinstance(prev_val, list) else adapt_kwargs
IndexError: list index out of range

[mauvilsa]

There should be no issues with jsonargparse v4.19.0 just released.

[starride-teklia]

Yes, thank you!