fix release pipeline

Author: isc30

.github/workflows/release.yml

@@ -19,7 +19,8 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: preview
+        dotnet-version: '8.x.x'
+        dotnet-quality: 'preview'
 
     - name: Build with dotnet
       run: dotnet build --configuration Release .\\src\\Blazor-Analytics.sln