Use miniforge3 over miniconda because of commercial usage constraints

[ehfd]

CC @TheAssassin

https://www.anaconda.com/blog/is-conda-free

As written above, Anaconda, Miniconda, and the main/anaconda channels are not free for commercial organizations with over 200 or more people. However, almost all other channels including conda-forge do not have this constraint.

However, conda-forge maintains its own installation of Miniconda, named Miniforge3. This contains mamba and conda-libmamba-solver as default, and is functionally equal except for only containing the conda-forge channel.

Located:
https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-Linux-x86_64.sh
https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-Linux-aarch64.sh
https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-Linux-ppc64le.sh