Delete .github/workflows/fix-latest.yml

During a routine security review today, I discovered that we have an `NPM_TOKEN` stored in this repo. I didn't think we used these as we had moved on to [OIDC trusted publishing](https://docs.npmjs.com/trusted-publishers/).

Turns out, there's this old workflow from #1002 which makes use of it. I don't really feel comfortable having tokens we're not using, used in actions we're not using, so by the power vested in me, I'm going to delete this action, merge the PR, and remove the GitHub secret.

cc @marji-workos

Author: gjtorikian