specify library target explicitly in pkg

Author: anthturner

.github/workflows/nuget.yml

@@ -24,4 +24,4 @@ jobs:
       run: dotnet pack --configuration Release
 
     - name: Push to NuGet
-      run: dotnet nuget push **/*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --no-symbols --skip-duplicate
+      run: dotnet nuget push **/UniFiSharp*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --no-symbols --skip-duplicate