Update publish.yml

Author: beheshty

.github/workflows/publish.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x' 
+        dotnet-version: '9.0.x' 
 
     - name: Restore dependencies
       run: dotnet restore