fix(next-typescript): Missing peer dependency warning

[eps1lon]

Fixes

➤ YN0002: │ @zeit/next-typescript@npm:1.1.1 doesn't provide @babel/core@^7.0.0-0 requested by @babel/preset-typescript@npm:7.3.3

I know this package is obsolete for next@9 but previous versions still require this plugin and with yarn pnp you actually get a runtime error

A package is trying to access a peer dependency that should be provided by its direct ancestor but isn't

Required package: @babel/core (via "@babel/core")
Required by: @babel/plugin-transform-typescript

[...]
(While processing: "/home/eps1lon/Development/src/js/material-ui/fork/.yarn/cache/@zeit-next-typescript-npm-1.1.1-c63d226a98.zip/node_modules/@zeit/next-typescript/babel.js$0")

Additional context: yarnpkg/berry#3

[timneutkens]

Thanks for your contribution. We're at this point not planning on doing a new release of @zeit/next-typescript. I've updated the readme: e7f87ce

[eps1lon]

Thanks for your contribution. We're at this point not planning on doing a new release of @zeit/next-typescript. I've updated the readme: e7f87ce

Which is bad for users who can't upgrade to next@^9. The current readme is misleading since it's only supported for the latest major.