Updated workflow to support build dotnet 9

Author: ogulcanturan

.github/workflows/dotnet.yml

@@ -17,10 +17,12 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Setup .NET
-      uses: actions/setup-dotnet@v3
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 9.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build
       run: dotnet build --no-restore
     - name: Test
-      run: dotnet test --no-build --verbosity normal
+      run: dotnet test --no-build --verbosity normal