set up quemu

Author: fgregg

.github/workflows/build_and_upload.yml

@@ -19,6 +19,11 @@ jobs:
       - uses: "actions/checkout@v4"
         with:
           submodules: true
+      - name: "Set up QEMU"
+        if: matrix.os == 'ubuntu-latest'
+        uses: "docker/setup-qemu-action@v3"
+        with:
+          platforms: arm64
       - name: "Build wheels"
         uses: "pypa/cibuildwheel@v2.21.1"
         env: