Minifiy broken due to miniforge change

[Lestropie]

From release https://github.com/conda-forge/miniforge/releases/tag/24.11.2-0.
Relevant change at conda-forge/miniforge#704.
Relevant documentation: https://conda-forge.org/news/2024/07/29/sunsetting-mambaforge/.

neurodocker minify now fails.
Following this command:
curl -sSL -o /tmp/miniconda.sh https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-Linux-x86_64.sh
, file /tmp/miniconda.sh simply contains the text "Not found", as this release derivative no longer exists.

[satra]

this PR: #651 resolves this specific issue but still has two failed tests. i'll try to get to them by this weekend.