LSTMHelper error with GPU backend

@jcuzzola yes I can confirm the issue here and just explained it as well:

This will go away with the release and we’ll have something more sustainable after. Sorry this was due to a CI migration to GH actions. There were a few bumps to sort out, but an upgrade was needed in order for us to release more consistently. You have the option of doing what I suggested in the post as a workaround. In the mean time I kicked off a few snapshot builds for both linux and windows cuda 11.0 and 11.2. You’re welcome to try later, install from source following my instructions, or wait till the release.