[ci] skip Android native build on Ubuntu arm64

Android SDK not currently installed, ref. https://github.com/actions/partner-runner-images/blob/main/images/arm-ubuntu-24-image.md#not-installed-software

Author: nil4

.github/workflows/ci.yml

@@ -86,6 +86,7 @@ jobs:
         ./publish_${{ matrix.env.SCRIPT_SUFFIX }}
 
     - name: build Android native
+      if: "success() && matrix.env.SCRIPT_SUFFIX != 'linux_arm64'"
       run: |
         cd Samples/Beyond.NET.Sample.Native
         ./publish_android_arm64