Support linux-riscv64 platform

[luhenry]

• Support linux-riscv64 platform
• MNT: Re-rendered with conda-smithy 2026.8.9 and conda-forge-pinning 2026.08.17.07.23.37

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[luhenry]

Depends on:

• Add linux-riscv64 as a cross-compilation target #104
• Support linux-riscv64 platform python-feedstock#896

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/recipe.yaml:

• ℹ️ 'Store Build Artifacts' is deprecated.
  Deprecated. Store the conda build_artifacts directory as an Azure pipeline artifact. Use workflow_settings.store_build_artifacts instead.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/32260428270. Examine the logs at this URL for more detail.}

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found it was in an excellent condition.