Pinned version of libgcc results in error on macOS 15.5

[Dekermanjian]

In conda-envs/environment-test.yml we are pinning libgcc<15. This produces the following error on MacOS 15.5:

Channels:
 - conda-forge
Platform: osx-arm64
Collecting package metadata (repodata.json): done
Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

  - libgcc[version='<15']

Is libgcc>=15 still an issue on windows? Do we need separate environment-test-windows.yml and environment-test-mac.yml specifications? Or is it safe to relax the libgcc restrictions?

[ricardoV94]

CC @maresb

[jessegrabowski]

This was a mistake by me. It should be deleted

Edit: For more context, I did it because I didn't realize that distribution of C compilers is quite complex. Adding this pin didn't ever do anything and I was scolded for it. But I guess it somehow made it in anyway.