switch install to mamba

[atravitz]

resolves #193

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👈 Launch a binder notebook on branch OpenFreeEnergy/ExampleNotebooks/fix_colab_installation

[IAlibay]

This looks good to me, but Mike is really the person "in the know" for how/why we did things with "install_from_url".

[IAlibay]

This makes sense to me, but @mikemhenry should really be the approver here.

[mikemhenry]

I've commented on the issue but the tl;dr is that I think things are more likely to break with the env than with the colab infra

[mikemhenry]

Also I think we can improve the locale swiches/hacks with this:

def return_utf_8(input=None):
    return "UTF-8"
locale.getpreferredencoding = return_utf_8

from googlecolab/colabtools#3409 (comment) (I can't remember if this notebook is the one where I have switch back and forth)

[atravitz]

closing this issue, going to bump our single file installers to python 3.11 instead.