Use latest @apollo/client and remove dependencies

[kratam]

The latest @apollo/client exports all dependencies. Not only they're no longer required, but they also cause weird errors if someone passes an InMemoryCache instance as the cache property if the instance is created from the latest @apollo/client version.

Packages imported from @apollo/client:

import {
  ApolloProvider,
  ApolloClient,
  createHttpLink,
  split,
  InMemoryCache,
  from,
} from '@apollo/client'
import { WebSocketLink } from '@apollo/client/link/ws'
import { getMainDefinition } from '@apollo/client/utilities'
import { setContext } from '@apollo/client/link/context'