Add .NET 9.0.x support for ARM64 CI

Author: mpasumarthi-git

.github/workflows/linux-cpu-arm64-build.yml

@@ -27,7 +27,9 @@ jobs:
 
       - uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: |
+            8.0.x
+            9.0.x
 
       - name: Install Rust with rustup
         run: |