Cleanup matlab GitHub Actions workflow to use conda instead of mamba · robotology/idyntree@1702df7

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v2, matlab-actions/setup-matlab@v1. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Run conda-incubator/setup-miniconda@v3

C:\Users\runneradmin\miniconda3\Lib\site-packages\conda\cli\main_config.py:738: FutureWarning: Adding 'defaults' to channel list implicitly. is deprecated and will be removed in 25.3. In the future, defaults won't be added when 'conda config --add/--append channels' is used. If you depend on that behavior, run 'conda config --append channels defaults'. deprecated.topic(

Run conda-incubator/setup-miniconda@v3