fix: skip sherpaonnx on Windows ARM (no onnxruntime pre-built), add serde_json dep

- sherpa-onnx-sys fails on aarch64-windows (no pre-built onnxruntime)
- serde_json needed by sherpaonnx_engine.rs for credentials parsing
- All other sherpaonnx variants pass (Linux x86_64, macOS x86+ARM, Win x86)

Author: willwade

.github/workflows/publish.yml

@@ -107,11 +107,6 @@ jobs:
             features: "cloud,sherpaonnx"
             label: "cloud-sherpaonnx-x86_64-windows"
             lib_ext: dll
-          - target: aarch64-pc-windows-msvc
-            os: windows-latest
-            features: "cloud,sherpaonnx"
-            label: "cloud-sherpaonnx-aarch64-windows"
-            lib_ext: dll
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4