ENH: Add Linux aarch64 and ppc64le builds

[matthewfeickert]

• Add linux_aarch64 and linux_ppc64le to build_platform and build via cross compile from x86 (linux_64) to use Microsoft Azure Pipelines for the builds.
  • c.f. https://conda-forge.org/docs/maintainer/conda_forge_yml/#build-platform
• Bump build number.

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• [N/A] 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.

[matthewfeickert]

@conda-forge-admin, please rerender

[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/meta.yaml) and found it was in an excellent condition.

[matthewfeickert]

Can't add macOS aarch64 yet, as this is blocked by ROOT not yet having a v6.32.2 build for osx-arm64 build.

[matthewfeickert]

@conda-forge-admin, please rerender

[matthewfeickert]

This seems stuck for the time being until the ROOT migration (https://conda-forge.org/status/migration/?name=root_base6322) is finished.

[matthewfeickert]

@conda-forge-admin, please rerender

[matthewfeickert]

Yeah, need ROOT to get rebuilt again for macOS:

├─ clangxx_osx-64 18.*  is requested and can be installed;
└─ root_base >=6.32.2,<6.32.3.0a0  is not installable because there are no viable options
   ├─ root_base 6.32.2 would require
   │  └─ clangxx_osx-64 17.* , which conflicts with any installable versions previously reported;
   └─ root_base 6.32.2 would require
      └─ clangxx_osx-64 16.* , which conflicts with any installable versions previously reported.

[matthewfeickert]

@conda-forge-admin, please rerender