Babel upgrade required for Gatsby compatibility

[dangerdespain]

• I'd be willing to implement this feature

Is your feature request related to a problem? Please describe.
I'm able to init a Gatsby project in /packages but unable to run from the root package.json scripts due to a ReferenceError: _createSuper is not defined error on startup.

Describe the solution you'd like
Upgrade Babel packages to ^7.9.0 where available (the rest seem to get along fine at ^7.8.0)

Describe alternatives you've considered
No alternatives discovered as of yet

[dangerdespain]

Hello there! I love the file structure that you're using here and am a huge fan of Apollo. Neat starter, thanks for sharing (:

I have an example of a working Gatsby project inside /packages here if you're interested in checking it out. https://github.com/dangerdespain/apollo-universal-starter-kit/tree/gatsby-demo