Build osx-arm64 natively on Azure arm64 agents

[stoiver]

Enables native osx-arm64 builds.

conda-forge now provides native Apple Silicon macOS agents on Azure Pipelines (see conda-forge/conda-forge.github.io#1781), so this switches osx-arm64 on via:

provider:
  osx_arm64: default

rather than cross-compiling from osx-64 (build_platform: {osx_arm64: osx_64}). A native build runs on a real arm64 mac, so it avoids the cross-compilation issues this recipe hits when cross-compiled (the meson build resolves numpy via pkg-config, which doesn't work for the host machine in a cross build), and it runs the test suite natively on arm64.

The build number is bumped 0 -> 1 because 3.3.7 build 0 is already published for linux-64/osx-64/win-64; rebuilding to add osx-arm64 re-runs all platforms, so the rebuilt artifacts need a new build number to upload.

I'll request a rerender to generate the osx_arm64 variant.

cc @conda-forge/anuga

[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.

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

For recipe/meta.yaml:

• ℹ️ top-level output overrides versions pinned in the feedstock:
  ['- In section host: numpy >=2.0.0']
  Requirement spec should not list version specifiers to respect conda-forge-pinning. If you need to force another version, please override the pin via conda_build_config.yaml.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/27085871146. Examine the logs at this URL for more detail.}

[stoiver]

@conda-forge-admin, please rerender

[conda-forge-admin]

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

I wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found some lint.

Here's what I've got...

For recipe/meta.yaml:

• ❌ Recipe maintainer "stoiver" does not exist

For recipe/meta.yaml:

• ℹ️ top-level output overrides versions pinned in the feedstock:
  ['- In section host: numpy >=2.0.0']
  Requirement spec should not list version specifiers to respect conda-forge-pinning. If you need to force another version, please override the pin via conda_build_config.yaml.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/27086023124. 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/meta.yaml) and found it was in an excellent condition.

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

For recipe/meta.yaml:

• ℹ️ top-level output overrides versions pinned in the feedstock:
  ['- In section host: numpy >=2.0.0']
  Requirement spec should not list version specifiers to respect conda-forge-pinning. If you need to force another version, please override the pin via conda_build_config.yaml.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/27086316672. Examine the logs at this URL for more detail.}

[stoiver]

@conda-forge-admin, please lint

[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.