ENH: Add aarch64, ppc64le Linux and macOS ARM builds

* Add linux-aarch64, linux-ppc64le, osx-arm64 builds.
* Bump build number.

Author: matthewfeickert

conda-forge.yml

@@ -1,8 +1,16 @@
 conda_build_tool: rattler-build
 conda_install_tool: pixi
+build_platform:
+  linux_aarch64: linux_64
+  linux_ppc64le: linux_64
+  osx_arm64: osx_64
 github:
   branch_name: main
   tooling_branch_name: main
 conda_build:
   error_overlinking: true
 conda_forge_output_validation: true
+provider:
+  linux_aarch64: default
+  linux_ppc64le: default
+test: native_and_emulated

recipe/recipe.yaml

@@ -13,7 +13,7 @@ source:
     - patches/cmake-minimum-3.5.patch
 
 build:
-  number: 2
+  number: 3
   skip:
     - win
     # https://github.com/conda-forge/root-feedstock/issues/327