Add support for github hosted linux arm runners

[adrianinsaval]

github hosted free arm linux runners are now available, it would be nice if conda-smithy supported using this
https://github.blog/changelog/2025-01-16-linux-arm64-hosted-runners-now-available-for-free-in-public-repositories-public-preview/

for the time being I'm manualy modifying the github workflow after rerendering: FreeCAD/freecad-feedstock@94eeaf5 FreeCAD/freecad-feedstock@608e637
but it would be nice if conda-smithy would either know what label it should use for linux aarch64 or let me configure it myself, I tried using github_actions_labels in conda_build_config.yaml but this seems to be only for self-hosted runners and has several labels hard-coded. Ideally it would be possible for me to use this to specifically select in what label my workflow will run per platform and architecture, I also don't understand why that config is in conda_build_config and not in conda_forge.yml?

[isuruf]

See

conda-smithy/conda_smithy/configure_feedstock.py

Line 1678 in 6595f17

"hosted_labels": ("ubuntu-latest",),

[adrianinsaval]

Is there a way I can customize what is used for hosted runners? I've had a situation before where macos-latest (back when that was the default) was hanging for my workflow and I needed to manually set an older version on the workflow.

Additionally, the qemu configuration step fails in the native arm runner so it would be nice to allow disabling that