PR: Update workflows to accommodate GitHub deprecation of macos-12 runners (CI)

[mrclary]

See actions/runner-images#10721

[mrclary]

@ccordoba12, macos-13 runner does not have Miniconda preinstalled, causing the tests to fail. I don't know if we want to install that in addition to micromamba or change from setup-micromamba to setup-miniconda.

[ccordoba12]

macos-13 runner does not have Miniconda preinstalled, causing the tests to fail.

Ok, that's not good.

I don't know if we want to install that in addition to micromamba or change from setup-micromamba to setup-miniconda

There's no need to use the setup-miniconda action. What's necessary is to set the CONDA env var to a certain directory in the Mac workflow file and then install Miniconda in $CONDA (I think it's better to do that in install.sh).

[ccordoba12]

Leaving this for 6.0.3 (or maybe even 6.0.4) to not affect the minimal Mac version supported by our installers in the 6.0 cycle.

[mrclary]

@ccordoba12, I recommend including this in 6.0.3 and merge as soon as is convenient as we are now experiencing the brown out for macOS 12. I don't think this will immediately impact any macOS 12 users, since this should only impact our CI environment and restricting macOS in our installer does not work yet.

[ccordoba12]

I recommend including this in 6.0.3 and merge as soon as is convenient as we are now experiencing the brown out for macOS 12.

Yep, I noticed that in another PR and I think it's a good idea.

[ccordoba12]

Thanks @mrclary!

[ccordoba12]

@meeseeksdev please backport to 6.x