message: Update changelog for publish.
diff: ## Upcoming
  -## `apollo`
  -
  -- `apollo`
  +## `apollo@2.7.0`, `apollo-vscode@1.6.0`
  +- `apollo@2.7.0`
  - Update operation normalization technique to deterministically order fragments within operations. This update affects those users of the [operation registry](https://www.apollographql.com/docs/platform/operation-registry.html) feature of the Apollo Platform. Anyone using the operation registry should re-register their operations with this new version of the `apollo` CLI via the `apollo client:push` command. Once all client operations are re-registered, the `apollo-server-plugin-operation-manifest` plugin within Apollo Server (which reads the manifest published with `apollo client:push`) should be updated to `0.1.0-alpha.1`. [#1158](https://github.com/apollographql/apollo-tooling/pull/1158)
  ## `apollo-language-server`
  