fix: `react-typeform-embed` is enforcing a peer-dep on react 16

Sorry for not following the template, it's just not that deep.

`react-typeform-embed` is in version `0.2`, which is 1 faux-major and 1 major behind of current-- when current is also abandoned 2 years ago in favor of `[@typeform/embed-react](https://www.npmjs.com/package/@typeform/embed-react)`
