fix: put back `@babel/core` dep in `@storybook/core`
fix: put back `@babel/core` dep in `@storybook/core`

We are using `babel-loader` in `@storybook/core`.
And `babel-loader` has a peerDep on `@babel/core`.
So we have to add it to the dependencies of `@storybook/core`.

storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook,kadirahq/react-storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook,storybooks/storybook