fix: remove unsafe ‘any' from NodeOptions type

[chrisblossom]

Currently NodeOptions are not typed because [key: string]: any matches any key.

FYI, I was unable to get lerna (yes I am familiar how it works and followed Contributing as well) to properly install so I am unable to check if typescript still passes.

Before submitting a pull request, please take a look at our
Contributing guidelines and verify:

• If you've added code that should be tested, please add tests.
• Ensure your code lints and the test suite passes (yarn lint) & (yarn test).

[kamilogorek]

Thanks!