* Switch to a fork of `apollo-upload-server` to fix missing `core-js` dependency.
As reported in https://github.com/apollographql/apollo-server/issues/1542,
the `apollo-upload-server` package (v5.0.0, which `apollo-server` relies on)
is no longer able to provide a `core-js` package because of change that was
outside of its control in a Babel release.
The problem is resolved in newer versions of `apollo-upload-server`,
however, regrettably, the newer versions of that package (notably, v6 and
v7) drop support for Node.js 6 — one of two versions of Node.js that are
currently under the terms of the Node.js Foundation's Long-Term-Support
(LTS) agreements.
Since Apollo Server aims to support versions of Node.js which are under LTS
(and will drop support for Node.js 6 in April 2019, per Node.js' schedule)
the current, immediate solution is to fork the `apollo-upload-server`
package as `@apollographql/apollo-upload-server`.
With the inclusion of
https://github.com/apollographql/apollo-upload-server/pull/1, we are able to
keep supporting Node.js 6. Without this change, every new installation
of `apollo-server`, which doesn't have a `package-lock.json` preventing
transitive dependency updates - specifically, the updates to
`@babel/runtime` versions newer than `-beta.56` - is broken.
* [squash] Update to `@apollographql/apollo-upload-server@5.0.2`.
* [squash] Update to `@apollographql/apollo-upload-server@5.0.3`.
