Python CI/CD Build source distribution job failing

[traversaro]

See https://github.com/robotology/ycm/runs/6575236637 .

2022-05-24T14:19:01.0104332Z ##[group]Run pip -v install --use-feature=in-tree-build dist/ycm_cmake_modules-*.tar.gz
2022-05-24T14:19:01.0104723Z �[36;1mpip -v install --use-feature=in-tree-build dist/ycm_cmake_modules-*.tar.gz�[0m
2022-05-24T14:19:01.0152128Z shell: /usr/bin/bash -e {0}
2022-05-24T14:19:01.0152335Z env:
2022-05-24T14:19:01.0152566Z   pythonLocation: /opt/hostedtoolcache/Python/3.8.12/x64
2022-05-24T14:19:01.0152895Z   LD_LIBRARY_PATH: /opt/hostedtoolcache/Python/3.8.12/x64/lib
2022-05-24T14:19:01.0153135Z ##[endgroup]
2022-05-24T14:19:01.3191110Z 
2022-05-24T14:19:01.3194208Z Usage:   
2022-05-24T14:19:01.3195473Z   pip install [options] <requirement specifier> [package-index-options] ...
2022-05-24T14:19:01.3196007Z   pip install [options] -r <requirements file> [package-index-options] ...
2022-05-24T14:19:01.3196477Z   pip install [options] [-e] <vcs project url> ...
2022-05-24T14:19:01.3196904Z   pip install [options] [-e] <local project path> ...
2022-05-24T14:19:01.3197295Z   pip install [options] <archive url/path> ...
2022-05-24T14:19:01.3197519Z 
2022-05-24T14:19:01.3198051Z option --use-feature: invalid choice: 'in-tree-build' (choose from '2020-resolver', 'fast-deps')
2022-05-24T14:19:01.3782893Z ##[error]Process completed with exit code 2.

[traversaro]

See https://github.com/robotology/ycm/runs/6575236637?check_suite_focus=true .

[traversaro]

fyi @diegoferigo

[traversaro]

Fixed by #412 .