Move "redux" to the normal dependency section.
Move "redux" to the normal dependency section.

redux is a peer dependency of react-apollo, and react-apollo is a
normal dependency, so redux should be too.  It's not only used for
tests/development.

Apparently the google deploy process cares (maybe it does a `--prod`
dependency run somehow?)  Maybe this won't fix things, but I am
getting a runtime error that redux can't be found, so I'm
hoping/expecting it //will// fix things.

Auditors: kevinb, john

Test plan:
Will try deploying

Khan/react-render-server,Khan/react-render-server,Khan/react-render-server