Update build.yml

.github/workflows/build.yml

@@ -87,7 +87,7 @@ jobs:
 
     - name: Push NuGet packages to MyGet.org
       if: ${{ github.repository_owner == 'openiddict' && (github.ref == 'refs/heads/dev' || startsWith(github.ref, 'refs/heads/rel/') || startsWith(github.ref, 'refs/tags/')) && runner.os == 'Windows' }}
-      run: dotnet nuget push "artifacts\packages\Release\Shipping\*.nupkg" --api-key ${{ secrets.MYGET_API_KEY }} --skip-duplicate --source https://www.myget.org/F/openiddict/ --symbol-source https://www.myget.org/F/openiddict/
+      run: dotnet nuget push "artifacts\packages\Release\Shipping\*.nupkg" --api-key ${{ secrets.MYGET_API_KEY }} --skip-duplicate --source https://www.myget.org/F/openiddict/api/v3/index.json
 
     - name: Push NuGet packages to NuGet.org
       if: ${{ github.repository_owner == 'openiddict' && startsWith(github.ref, 'refs/tags/') && runner.os == 'Windows' }}