"max-line-length" is not taken into account in g:lsp_settings

Hi

"max-line-length": 120 is not taken into account in let g:lsp_settings. Other settings as ignore works. I have the following in lsp-settings for python:

    let g:lsp_settings = {
    \   'filetype': {'python': 'pyls-all'},
    \   'pyls': {
    \     'workspace_config': {
    \         'pyls': {
    \             'configurationSources': ['pycodestyle'],
    \             'plugins': {
    \                 'pydocstyle': {'enabled': v:true},
    \                 'pycodestyle': {
    \                     'enabled': v:true,
    \                     "ignore": ["E226", "E302", "E41"],
    \                     "max-line-length": 120,
    \                 },
    \                 'black': {'enable': v:true},
    \                 'autopep8': {'enable': v:true},
    \             },
    \         },
    \     },
    \   },
    \ }

I get warnings in my code as e.g.: `Lsp: E501 line too long (140 > 79 characters)`

My environment:

- OS: Linux Mint 20 Ulyana
- Vim: NVIM v0.4.4
- Python: 3.8.2
- Lsp: pyls-all

Start by tracing how g:lsp_settings passes the pyls workspace_config to pyls-all, focusing on the pycodestyle ignore and max-line-length options. Reproduce the configuration with a 140-character line and verify that the resulting E501 warning respects the configured limit.