Remove babel-core as dependency
Currently the documentation suite uses babel-bridge
(https://github.com/babel/babel-bridge) to bridge the gap between:
babel-core
@babel/core
If we move from vue-jest
to @vue/vue2-jest
(https://github.com/vuejs/vue-jest#installation, which is the correct version for the jest
27 we already use), we don't need to use a bridge.
Edited by Evan Read