Update tests-windows.yml

.github/workflows/tests-windows.yml

@@ -28,7 +28,7 @@ jobs:
     - name: Install .NET Core
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.4x
+        dotnet-version: 8.0.x
 
     - name: Install wasi-experimental workload
       run: dotnet workload install wasi-experimental