Improve dotnet publish and remove artifact upload

Updated the `dotnet publish` step to properly quote the output
directory path, ensuring compatibility with paths containing
spaces or special characters. Removed the artifact upload
step (`actions/upload-artifact@v4`) to simplify the workflow.

Author: vikram-gaddam

.github/workflows/web-app.yml

@@ -29,7 +29,7 @@ jobs:
         run: dotnet build ./BlazorBootstrap.Demo.Server/BlazorBootstrap.Demo.Server.csproj --configuration Release
 
       - name: Publish
-        run: dotnet publish ./BlazorBootstrap.Demo.Server/BlazorBootstrap.Demo.Server.csproj -c Release -o ${{env.DOTNET_ROOT}}/myapp
+        run: dotnet publish ./BlazorBootstrap.Demo.Server/BlazorBootstrap.Demo.Server.csproj -c Release -o "${{env.DOTNET_ROOT}}/myapp"
 
       - name: Upload artifact for deployment job
         uses: actions/upload-artifact@v4